Reddit Survey: Self-Hosted
Here is a survey showcasing what is popular in the home server realm. So far, we fit in nicely! It appears that most of those that use a home server are developers. The top services also line up well with our estimations. It also indicates that there is demand in a family setting.
Hopefully these statistics will help you to understand the role the home server plays as this is only a small fraction, not even covering home automation or surveillance.