Should I tackle a problem I’m passionate about?

I think I always knew that if I was going to start a start-up, it had to be something that I felt passionately about and something that I felt that was somehow good for the world. So I came in thinking like, oh, maybe I'll work in healthcare or in green energy or something that I felt was tech for good, felt important. So I feel like I was always going to do something in the tech for good space and could never have done something, I don't know, to do with something that just makes a process more efficient, for example.