Here is the issue though .. as a man, if I am not interested in clubbing, going to the bar, art class, etc. where do I meet women to ask? This was the conundrum I was in throughout grad school. It is really, really hard. As I have aged, I know there is a flip side of the coin, where women also wonder where the "high quality" men are hiding. But it is way too hard.
I do remember in my younger days approaching someone on the bus .. in a friendly, non-creepy way. It didn't go anywhere but we did become friends for a short period. I just don't think it is okay approaching women generally in places like the bus because it is not okay to make them feel creeped out.