We usually do about 50k a year, all of it personal travel. With my family spread all over the US and my wife's family in Japan, we always have something booked. I kind of sort of wish I had a job that required some occasional travel though - sitting behind a desk all day every day is not fun.

Honestly though, I think 50k/yr is just about right for me. Any more and I think I'd get too worn out, and any less would leave me feeling itchy to go places.