I see a lot of people in the #SelfHosting and #HomeLab communities using complex setups comprising business-grade equipment.
I'm running 7 VMs on an old Dell OptiPlex desktop I got from a thrift store. I got my main SSD from the trash at an old job. I have files on a portable hard drive from 2009. Using salvaged hardware is half the fun of self-hosting for me. Good backups make up for unreliable hardware.