Hi JuliaIt's quite probable that the surgery would be cost effective in terms of reducing ongoing morbidity.
The difficulty I have with it is that offering surgery to people who won't change their diet and lifestyle seems to me like implying tacit approval for not taking responsibility.
What's the possibility that, for some, eating can be as addictive a behaviour as smoking, alcohol or using drugs? I think it is far more than just a case of people "who won't change".
Then there is the possibility of other underlying psychological and/or medical conditions.
I'm not suggesting that anyone should be able to turn up to a surgeon and have obesity surgery. The surgeon should have parameters as to who is, or is not, a suitable candidate and also have support services [such as a psychologist with appropriate expertise, a dietitican and an exercise physiologist] available.
[Had my say and will leave it to others now].