I used to do this back in the late 90s! I was also self employed and happy with it, but the added ingredient was overenthusiastic recruitment agencies who wanted me to go. I had one particularly eager guy who wouldn't leave me alone and got me to take an interview at the BBC for Director of Online Media or some similar high flying title (the role was not as significant then as it is now).. I was wildly inexperienced and only 18 but I ended up spending a few hours in BBC Television Centre and it was quite the day out ;-) The recruiter never contacted me again after that.