I don't see what's wrong with old second hand power supplies. These corporate mini PC's are manufactured in such large quantities, that finding them in good condition from reliable sellers isn't exactly hard.
For most self-hosting purposes mini-PC's are often the best option in my opinion, because they're small enough in size and low in power consumption to be comparable to raspi, but powerful enough for stuff like running a virtualization environment, and support containers that are only for x86. Admittedly I did go for desktop though, because I wanted more storage, dedicated GPU and ECC RAM, but for lots of people a single mini-PC could host everything.
I still like raspberry pi for doing small things where I want redundancy, like running DNS server that stays up even when I do maintenance on my main server. And obviously it's great for embedded projects and such.
For most self-hosting purposes mini-PC's are often the best option in my opinion, because they're small enough in size and low in power consumption to be comparable to raspi, but powerful enough for stuff like running a virtualization environment, and support containers that are only for x86. Admittedly I did go for desktop though, because I wanted more storage, dedicated GPU and ECC RAM, but for lots of people a single mini-PC could host everything.
I still like raspberry pi for doing small things where I want redundancy, like running DNS server that stays up even when I do maintenance on my main server. And obviously it's great for embedded projects and such.