I was taught by my grandad who could literally make something out of nothing (Including casting magnesium sumps for Jowett prototype cars). When he died, I had still got a lot to learn and don't mind admitting failing a lot on the way. I started collecting tools along the way and now have a full garage that almost rivals a workshop including a hoist, compressor, welder and god knows how many specialist tools such as reverse brake winders, flarers, locking kits, C.V. boot tools. Every time I do a job, I learn something new.
If it wasn't for these skills, I'd be in trouble now as I have hit some lean times. Fortunately, I was ableto shoehorn a new engine into an Omega and I now have a car that I am really proud of.
In answer to the theme of your thread, home mechanics are now more prolific than they have been in the last 20 years. How do I know this? Just look how many members this forum has... 8-)