Call me strange, but I've always enjoyed answering questions. Even at school, I was always somewhat excited for my examinations because of the opportunity it gave me to answer some more questions.
So for me, Musing is amazing as I get to do something I enjoy and sometimes I even get rewarded for it! There are also times where I don't know the answer, so I have to look it up and in that way I'm enriching myself by helping someone else at the same time. This is my motivation for checking Musing and coming back for more multiple times per day.