I have a singlespeed, I live in a mostly flat city. It's awesome! Most bikes have gears and are more 'breakable' as they have all those external moving parts.
Then, there's that gear system that is built into the wheel, that's less breakable but probably less reparaible too.
So, my advice would be to get a fixie. I used it with the 'freewheel' config at first but having switched I learnt of the efficiency in translating hard pushes on the pedal (I don't stand-up pedal anymore, and most small slopes are a bit easier now!)
Fixies had a revival for these reasons. Unfortunately, at least in Germany, they're extremely underrepresented in the market.
Indeed. Also, I am concerned about self-hosting enthusiasts that install docker (without the advance rootless mode) and blindly run containers. Sometimes these containers are even made by third parties, independent of the app developers. Unfortunately, the supply chain there is up for grabs...