Its as addictive as crack or heroin.
Once your hooked, you can never get away from it.
Also...
I think it all depends on the job and the blokes you work with/firm your on.
Some jobs ive been on have had good Site Agents, who understand Scaffolding and work with you to get the job done, instead of flinging stupid rules about all day and making your job twice as hard as it needs to be.
Some blokes ive worked with have been nothing but slimy, grassing low-lifes. - Again, instead of getting their heads down and getting the job done, they make the job alot harder then it needs to be.
Same with firms.
Some are shiit, some are good.
I think if your lucky to get on a half decent job, with some good lads and a sensible Site Agent and your 'allowed' to earn some decent money, and not have your arse screwed by a greedy boss, then its as good as it could be.
I think thats all any of us could ask for.
Good workmates.
Good and easy going site.
Decent pay, or the ability to earn it, if its available.