For me it's reliability: I don't have to think about power or network outages, hardware failures etc., and after doing sysops at work I don't have to come home

For me it's reliability: I don't have to think about power or network outages, hardware failures etc., and after doing sysops at work I don't have to come home and do the same thing on my own stuff or servers. (the only thing I need to care about is backups) It's similar reasons to why people choose to pay for e.g. AWS instead of buying physical servers and colocating them.