How it feels when somebody like, comment on your post and why you post

I feel good sometime thrilled that others like or comment on it, how you guys feels and.

if nobody likes it do you stop posting stuff why?
why you post "do you have some longer term goal"
communities like IH, Reddit or Facebook etc are because of us. so why entire (revenue-spends) goes to the founder there must be some more rewarding things for good content