I think a lot of people start up a server because at the time it fits with what they want to do. Once you realize this is not a job (correct description) you wanted to take on it becomes much harder to motivate it.
As soon as you run a server for others outside of the immediate friends/family circle it can be really difficult to deal with the expectations of uptime and service. Also, some don’t want to ask for help but also take on all the moderation themselves too.
Yeah I think you got the numbers crossed there :D