it was written in the commandment thou shall not kill..... I think its reffering to all of the living things
but its a human ways to kill.... if its a sin, then we all have sin of killing

I personally think it depends on the circumstance.

We had to take this huge ethics class back in college on this subject and things like the Death Penalty, Assasinations, are they right? What constatutes as a Punishment that fits a crime, etc...
Basically, it comes down to what society dictates and right now people don't like the idea of "murder"... and by that I mean one person killing another person for either sexual or phychological gratification.

There's a lot of definitions to what exactly murder is, and courts have been arguing over it for years. Is it murder for a battered wife to kill her husband to save her own life? Is it murder when we go to war and lives are taken to protect causes we may or may not believe in? Technically people are still taking lives so "murder" is taking place; however, I think we've come to personalize the term to mean a one-on-one situation between a peratrator and their victim(s).

If you're really interested in how our laws define what a homicide is you check out its definition in a legal dictionary:
Homicide: http://definitions.uslegal.com/h/homicide/

Murder is defined slightly different:
http://definitions.uslegal.com/m/murder/

Of course, these are just loose definitions. Seriously. If you want an actual definition of what exactly makes a something a homicide chech out your own states constitution and see what their laws say. I know here in Ohio it's the Ohio Revised Code... it may be called something else depending on what state/country you live in. They have all sorts of nifty and crap laws in there. It's actually sorta handy to know.

yes what right do we have to commit such an action?

Mock: your ethics class failed to think hard enough. It is the state, the rulers, that passes the laws and decides on the definition, not society. Any criminologist could have told you that. And people are usually killed out of shattered emotional ties, like a wife that has cheated on her husband is killed before leaving him, or such. The second biggest reason is that people are simply "in the way", ffor instance they could witness against you and hinder your life greatly. Joy of killing is a rare reason.

maybe it depends upon a situation

After re-reading my post I can see how I could be a misunderstood. I know it's the state/county/etc that passes laws. I didn't mean society dictates how laws are interpreted/passed - per say - in a court room. I just mean society as a whole has it's own definition for things such as murder, etc... which aren't necessarily the actual on-the-book definitions and rules of law that are followed by the federal/state government. Courts can rule whatever ways they want and follow all the precedence they want as well, but people will always have their own opinion on what is, or isn't an actual murder even if the event was a completely by-the-book case.

I hope that makes a little more sense. ^_^'

Didn't a man from the FBI do a study on plants where he stated that he thought they had feelings due to results he found on a lie detector? Like, he hooked them and up to the machine and they apparently had responses that were similar to people feeing anxiety when posed with threats of being eaten or damaged.

I know they did a mythbusters ep. on it a few months back, and I remember hearing about it back in the early 90's or so in various crapy school text books.

Personally, if I have to kill something to survive then so be it. If it's between me starving to death or eating Fluffy the kitten, then Fluffy is going to be might cute going into my tummy. Mmm... Fluffy.

really good point... but then, how will we survive without killing?

if we are wrong for doing such thing, then cows are wrong for eating grass, snakes are wrong for eating mice...
if we kill for survival, i think it's just right..
but killing because of hate or some other reason... that's wrong.

only if in is totaly needed. in some cases killing is the only way

Yes, i don't think you should have the choice over whether or not another person should live. Yes, tons of animals get killed because of unjustified reasons, like fights, testing etc;, but lets face it, animals don't have the same rights as humans.

Sorry, I must say I didn't read the majority of the posts here..

Humans kill for survival. And some kill for fun, with their own twisted world of ethics. It's a bit like how the world is divided up with distinctions, and thus the animals and whatnot do not have the same rights as humans (as jebusxjuice and some others have said). I do not believe it's the authority of a human being to kill another human being regardless of their reason. It's not like one would die because he/she couldn't have killed another ..humans can control their actions (though excuses could be given ..). Survival isn't based on how one can plunge another to his/her's death.

well...some people we can definitely do without in this world xP

its not wrong to kill people specially if they are people who are in jail or all those
people who kill innocent ppl and those who are riping girls and violating women
and all those politicians and ppl who are making war or are just killing ppl because they like
to kill them so for me in that case its not wrong to kill ppl in fact im in favor in that way

but you don't have to kill ppl just because you like to kill them so in that case im against killing ppl.

i don't get it lol

A lot of creatures are born to kill its like instinct. But killing using cruel methods that is seriously wrong.