My concern wasn't so much about our collective lack of free time, although that certainly plays into my next point:
Our housing situation is terrible for a few reasons, but I don't doubt part of its because the trades have become less employed and more in demand, and any owner/operator has such tall overheads that they can't "just" charge $20-$40-even $100/hr anymore.
This puts anyone in the lower income brackets in a bind - they can't work on their own house without knowing proper codes, and they also can't find the time to work on their own house around a 40-50/hr work week, with kids and life/time constraints. They also don't make enough to pay someone 3x their hourly wage to fix or remodel things.
My neighbor has been renovating his foreclosure house, not as a flip, but as a future home for his family of 4. It's been eye-opening how much time it requires. He's pretty much at it every night and every free day he's got. He hires help (luckily his BIL is a contractor) for anything he can't do, but most stuff he can. I wouldn't doubt that even doing so much himself, he's only barely breaking even in terms of overall costs vs market value - and he paid $40k less than me. Not just are tradesmen labor prices going up, but so are materials.
So many tradespeople say "well I need to charge $50-$100 in order to make any money and not totally destroy my body and I can't keep up with all the work I have so I charge more to thin it out."
Then they say things like "if you hire anyone cheaper than me they'll most definitely mess things up and you'll need to call me to fix it!" It's as though part of being a "good" trades person is talking crap on everyone else.
Oh, so what, anyone that doesn't have the skills or time to do their own projects is doomed to either A) going broke or B) living in a crap hole?
It's as though having a good functional house is now a luxury.
As other members have proven, you can certainly do lots of stuff yourself and end up with a great result, but having the time helps. I've heard this story a few times - "my dad/grandpa/uncle quit his job for a year to build our cabin or his home" or even "my dad took a sabbatical to build our place and then went back to his old job." That would never happen to today's job market. You quit? Cya. We'll replace your position next week. The only people who have that luxury are at the very top of the income scale. Ironically enough, probably tradespeople.