Joosabob,
I am not trying to put you off plumbing in any way, but come back to the forum in a few years time and tell us if you think that plumbing is still a doddle, its not all nice clean work, it can be heavy, hard to get at, and disgusting at times
One job I was called to in a pub with a steak bar attached, the phone call said the the sanitary towel disposal machine was blocked, I would say it was, it was a Haig massarator (sp) (like an overgrown sink waste disposal unit), when I looked at it there was a Marks and Spencer plastic carrier bag with both towels and tampons stuffed into the machine, which had started and become jammed, there was only one way to clear the machine and that was by hand
Other job can be places where you wipe your feet when you go out of the door
Roofing work, lead is heavy to work with, copper and zinc can cut your hands to ribbons
Central heating, boilers can be heavy to lift on your own, lifting floor boards can give you splinters an inch long or more
Plastic wastes the solvent can give you a high when working in confined spaces
It really all depends on what type of work you want to do, but you can be sure of one thing, it will in no way be like bringing up kids, the clients can look good (plenty of money by the looks of things) but be bad or non payers, some can be demanding to the extream, like an old priest I knew, who would sit on a
wall mounted basin and then complain because it came away from the wall, others can be a joy to work for, like a client who said to us, I dont care how long you work for (3 weeks before christmas, my wife has myopia, and I want to give her a christmas present, all the kitchen units are there, please get it finished before christmas,) this was a complete gut out and redo a kitchen, includeing removal of a larder, whilst keeping the services in opperation, after 6pm every night the client went out and brought rolls etc, provided us with coffee, and never complained even if we did not finish untill 10pm or later, we finished the job a day before christmas eve, and had to go back christmas eve where the client both tipped us well and plyied the drinks