If you know my wife and I at all, you know that whenever one of us is in the shower and the other one is in bathroom, we start singing the infamous stalker song, "If I Were Invisible." This morning, when Malea began singing that song to me I informed her that if I were invisible I would do something useful with my super powers, instead of just creepily watching people shower. This sparked an interesting conversation about what you could do with invisibility.
After some serious thought and conversation I came to the conclusion that the only useful thing you could do with invisibility was to become a world famous assassin or a first class thief. So basically what I am saying is that invisibility is more of a super villain power.
If you can think of anything more useful to use invisibility for, then good for you, but I couldn't.