I made the decision to go to a career center (vocational school) in HS for HVAC and it was a fantastic decision, learning HVAC branches off to so many other trades, electrical, plumbing ext ext.
By no means am I a pro in the electrical field or plumbing but I can do it.
I worked 5 months in an low income apartment complex so I picked up a lot about residential maintenance from that job.
I can't tell you how much "being handy" has helped when buying my house at the age of 23, I have never had to hire someone for anything. Stuff like converting my electric furnace to a natural gas furnace and keeping my existing heat pump, that's all simple to me now, any plumbing or electrical issues are no big deal, I never find myself helpless having to wait or rely on someone else to fix it for me.
Idk how much money I saved by doing it all myself but I'm sure close to 10s of thousands, I buy equipment from the whole seller/ supply house with my own accounts and install it myself lol. I put in a twin water softener with the brine tank, I paid $1400 for the whole system plus my time, a guy down the road paid over 4k for a single with the separate brine tank installed.
One thing that sucks is I have become the HVAC guy for a lot of people, it's fun for me and I enjoy it. I don't charge much, I mainly get the experience out of it and kill some time. Since it's not my career, I like to stay sharp with diagnostics of HVAC systems so I like the challenge of a new prob, what I don't like is to get a call from someone that's frantic and wants there system fixed yesterday and gets mad at me when I don't drop everything and make them the number one priority in my life, that crap happens a lot.
Another aspect of it was I learned a trade in HS, shortly after graduation I quit my restaurant job and got hired on as a HVAC installer/ Tech apprentice, apartment maintenance after that and now I'm 4 years in being a building engineer in a almost 300k sq ft call center, I didn't waste thousands trying to find a career path in college, so I don't have the higher education to pay off, I have education threw experience.
I don't make a ton of money, there's college educated people making double what I do but I don't hate my job, it isn't super stressful and I make enough to pay my bills and dabble with my farmer wannabe hobby lol. So I'm happy how things turned out.
Physically I may last longer living with a apartment in the city lifestyle but mentally I would be in much rougher shape and would constantly be seeking entertainment outside of work.