Done it myself for "personal reasons" about 5 years ago. If you're not 100% reliant on a regular monthly salary but still enjoy the cut & thrust go for an Associate position with either a niche or small consulting company. I did this a few years ago and now control my own destiny in terms of assignments and time commitment. Re travel, I think that has actually gone up in terms of distance (Oz, China, etc) but timed largely to suit my needs as well - a bit of holiday tagged on always.