Are Z80 systems and alike very common? Seems like a niche hobby. I'm thinking old phones, tablets, and portable computers will be more common. I keep several b

Are Z80 systems and alike very common? Seems like a niche hobby. I'm thinking old phones, tablets, and portable computers will be more common. I keep several bootable USB drives which have lots of ebooks, audio books, videos, software, and games along with several old laptops/netbooks which were free. I also keep some of those files on microSD cards to make them accessible with tablets. IMO collapse will be very boring so lots of books, audio files, video games, and music would be nice to have if it can be run off small off grid solar setups.