> If you can't find free time to do it, it's obviously not that important to you. Open source software works pretty well, doesn't it? Why not math?

You do realize that much of a number of vital open source projects are primarily developed by people who are paid to develop it?

> I don't think mathematics should be done as a profession.

Personally, I don't think writing, blogging, acting or singing should be a profession either. But here we are.