I think it is a good thing to consider what's in it for me.
We have to set up win/win situations.
Sometimes what is in it for me is ... the feel good I get from helping.
Sometimes what is in it for me is... Your success is my success.
I personally see no problem with considering what is in it for me.
In addition sometimes when I decide there is nothing in it for me. I do the thing anyway. That's what great about being human.