The problem with that is that they are usually in tiny venues, often with no seating (some of us have issues with standing for a few hours straight), and absolutely terrible acoustics.
I went to see a favorite (relatively small) band of mine a couple of years back, but the venue was so tiny and...I guess echoey isn't quite the word, but it sounded terrible and unclear, and with no seating, such that I couldn't even make it through the opening act. I was glad to have supported a favorite band financially, but it was pretty damn disappointing. Guess maybe I should get a wheelchair so I have somewhere to sit at events like that.