any idea about that??

To keep learning.

Because it's fun?

because if we won't play chess we'll start having a life...

that is right hehe

Masochism.

to compete and to win

Why not? 

To keep my self engaged, give my brain some exercise more than all it gives me pleasure

cools

It's enjoyable. What other reason do you need?

to have fun + to think

because its raining and i dont play golf in the rain

It depends: some people play for  getting prize or money, some people  play for fun, some people try to understand immanent chess laws.

Strengthens the mind, enjoyable and getting to be very addictive for me. ( causing a domestic with my other half tho, she cant play bingo online while I am on here 

yea right

Yes, and to relieve stress.

I play chess because it is very enjoyable

because i'm not strong enough to compete in a boxing match

Isn't this the free scrabble site?