Do you have anyone that you can pass on your skills?
I once had a stepson. He couldn't care less about anything mechanical. I tried to teach him the basics but he cried like it was punishment.
My dog on the other hand watched every move I made on the cars. He could almost fetch me the right tool when I needed it ;-)
The only man that I am friends with that knows mechanical things is a couple of years older than me. No one I know will want my tools or car parts.