Personally I like GPL for core systems type of software, like an OS. I don't care what license you put desktop applications under, could be MIT, could be proprietary. I make software for a living, open source has a cost. If you want to profit off your open source software and have a competitive advantage against people forking it, you should 100% license it accordingly. I put a lot of thought into my projects before licensing them, I would hope others do as well.

My default is almost always MIT though.