This. My HDD also holds local copies of games in case I want to move them to the SSD.

My PC was built in 2015, the case, PSU, 2xHDDs, 2xSSDs, and fans are all original. No reason to change what isn’t broken. If I ever move on to a new case, I’ll just turn these into a server farm ¯\_(ツ)_/¯