Why is most anime centered on fighting? Something I have always wondered, why is most anime centered on fighting? DragonBall Z, RWBY, Bleach just to name a few. I've seen some that aren't, but it seems to be few and far between. Is this something that just relates to the Japanese lifestyle?
Anime can be broken into three broad catagories - shounen, shoujo, and seinen. These translate into roughly young guys, young girls, and adults (as in not young people). Most of the "popular" shows are shounen, which contain a lot of action/fighting, simply because that demographic likes that kind of thing more. 

As can be expected, there are also shoujo shows, which are mostly romance, drama, and romantic comedies. Seinen shows contain themes of psychology, mystery, and other stuff adults are interested in. 

In the end, you can compare the anime genres to western movie genres, you have big block buster action flicks, aimed towards guys, you have chick flicks for the girls, and you have these thriller/mystery/philosophical stuff for the "sophisticated"