As a 14 year old programmer and tinkerer in 2004, I had no problem buying a Helium-Neon laser for an experiment and paying via PayPal.
As an 18 year old tinkerer and hacker in 2008, I had no problem signing up to take payments via PayPal and running a little side thing selling home-assembled widgets out of my bedroom.
And as horrible as PayPal is, cryptocurrencies have even more friction and risk.