Comparison---> Competition?

Does comparison have any evolutionary significance? Perhaps so, if comparison leads to competition, and why do humans like to compare? Competition leads to advances... and we always strive for a better condition in life, but is it true that the only way to recognise our own advances is to compare with others? Achievements and status are all relative. Is it necessary that we could only look good, by making other people look bad?

I sometimes do things which others do not really approve. Does that mean I am wrong/ a bad person by doing that? Ok, it's not something I do routinely, but it's my way of life. I understand the risks involved, as one hears from the news from time to time, people gets murdered, cheated, raped...etc. But the probability that happens could be less than 1 percent. I just wanna say I am a very careful person, and I take very careful measures into doing things. I do not wish to limit my chances and I do not want to be judged. Anyhow, I know everyone cares for me.