The sparks who did some work for me a while back buggered off to France regularly between jobs. It was very much his decision and not forced on him.
It might be 'eight f***ing weeks' when you compare it to a 9-5 office based job but there is a wide range of employee positions out there which do not follow the typical 9-5 and 6 weeks off holiday deal. Maybe if you stepped out of your little blinkered world you might notice this. Teacher's time off it as the top end, but as I pointed out it is not up there on it's own. Teacher's time off is certainly a working pattern of the job.
I once had a job with flexi-time and this allowed me to work 8 hour days and gain an extra day off every two weeks. This amounts to around an extra 5 weeks off over the course of a year and it enabled me to go back packing during the summer.