I am not sure how nice I am to be honest. Sometimes doing nice things just don't cross my mind, I can't get pretty blinkered when stressed or down.

When I do help out though, I don't it for getting something in return, even though at times there is a side benefit. Like when I have kids clothes that are no longer needed, it benefits both the receiver and me, as I no longer have them crowding my house). I have often volunteered in the past, which is yet another thing that benefits me (even though I don't have to do it).

I do think sometimes I don't give/help out when I think of it when there seems to be competition involved (who can spend more time, give more things/money).