I think because they are simple enough to understand, to design and build without pro-level skills, and there's quite a bit of software, documentation, and even

I think because they are simple enough to understand, to design and build without pro-level skills, and there's quite a bit of software, documentation, and even peripherals out there. E.g. the Tynemouth Software kits: https://www.thefuturewas8bit.com/shop/tynemouth-products.html https://www.thefuturewas8bit.com/shop/tynemouth-products.htm...