Because then I have to manage that server. I'm suddenly responsible for security, rebooting if there's an outage, keeping things up-to-date, etc. I've had bot

Because then I have to manage that server. I'm suddenly responsible for security, rebooting if there's an outage, keeping things up-to-date, etc. I've had both a small personal Linux server (for web hosting) and Fastmail (for everything else) for several years, and I've easily spent 2-3 times the cost of my Fastmail account in time spent fiddling with my web server over that time period.