What do I benefit from playing chess?

Haha,when I was just a kid,I like watching senior people play chess,it's really interesting and challenging.So far I like playing Gobang(five-in-a-row),chinese chess,reversi,I-go and so on.Most of them whose rules are quite easy,but changeable and hard to totally grasp the core,teaching me to become more careful and fexilble.It is quite a tranquil and recreational game for me.Whreas,every time after I play chess for several turns,I feel rather tired but excited.My brain seems to be calmer.There is so much knowledges behind it just like my lide,full of changeable and uncertain things.