I miss the good old days where you installed a piece of software onto a server, confirmed it was working correctly, then just left it to it for months/years on end.
Nowerdays with regular security patching, poorer hardware/software etc. you can guarantee that odd reboots and other such issues will arise from time to time.
Years ago when I was with a different company, we found a server running as an additional domain controller hidden in the corner of a comms room at the opposite side of the building. Everyone had forgotten it was there and it hadn't been touched or rebooted for years - yet it was still happily working away without issue.