For the longest time I've been too much of a cheapskate, even for AirBnB.
Of course, I would spend a lot of time in hostels (or stay with friends if I was in the US). Plus, if work takes me somewhere I'd rather expense a room with a real person, rather than some soulless hotel in a 9-5 downtown. So now it's looking more appealing.
I love travel, enough that I pretty much have fallen in love with everywhere I've gone. Of course, I realized that I do my research pretty heavily and don't go places that I know aren't really awesome.