War makes me depressed. I admit there were some wars in history which were necessary, but most are just pointless killing and violence.

Depends, most of the time it is needed.

It's needed sometimes. And I'm not afraid to use full force. But violence is never the answer. In the past, it determined someone's independence. But.......... During the present day, there are some rather unecessary reasons for war. Many people lost and still lose there lives because of it. However, if I were to give you a good reason for war, I'm afraid that I couldn't give you a answer. Not because I don't have one. But because people make up "good" reasons for war. The world doesn't change, it only gets worse. "War does not determine who is right - only who is left."

^Exactly. Very wise words.

If we didn't do war, more people would be dead. All the World Wars was needed and all the wars right now. people sign up to protect and stand up for the countries, they know the risks and they are willing to do it.

The ones pre-19th century yes, present wars no. (Mostly)
Sorry, how were both world wars needed?
How was killing 10 million fighters a necessary consequence of the assassination of one man? It wasn't.
WW2 never needed to escalate that far, Hitler didn't want Britain fighting. 20 million people died in fighting alone, and $22 trillion all went down the drain. All because one country was captured.
I don't think WW2 was necessary at all.
As for IRAQ war for e.g that's all bullshit, USA just want oil, but use terrorism as an excuse or whatever. Main reason people dislike USA.

Hitler was killing the Jews for god sakes, he took control of a lot of countries. That wars was needed to stop him.

You mean The concentration camps? the Final Solution? That started in 1941, 2 years after France and Britain declared war. The fact that the war escalated so far might have drove him to it.
'Control' means people will be living differently, but still living, and better quality. After the war 10% of Europe's population died and they were dirt poor.
In the present nothing has changed, Germany still controls Europe...

I exist because of a war, and I don't think anyone wants that. I am and will always be against war. (even if some was necessary)

Wholeheartly against, my cousins back home live in a country with war, i know all the pain my mom have gone through and i never want to see people hurting like that again.

Even if it is need i wouldnt like it.

More people would probably end up dying and loosing everything if there wasn't war. If countries didn't step in and help other countries, the people there would have no freedom or any choises in their lives.