To partake in this hobby on a semi-regular basis (e.g., once or twice a week) is going to cost between $10-20k a year. Depending on where you go (AMP, AAMP, Escorts, etc.) So you can do the math on what kind of income allows one to do that responsibly and what type of careers pay that type of income or how much wealth is required to support that spending. I am sure with like anything, some people spend more than is prudent and for others it's a drop in the bucket.