I believe this is a slightly controversial topic, at least from what I have gathered so far. Some say its best to leave the server on to spare the life time of the spinning rust. Other seem to prefer to save power and boot the server off each night. So wanted to chip in and hear what folks here do and why do what you do.

Bonus question; Do you guys have a UPS? Is it a must have for a homelab, or does it just depend on the usecase?