I have nextcloud running since nearly 5 years and it never failed once. Only dowtime is when the backup fails and somehow maintenance mode is still enabled (technically not a crash)
For those interested: Running in docker with mariadb in a stack, checking updates with watchtower everyday and pulling from stable, backups with borg(matic)
Depends a bit on what features you want to have. I use LibreELEC to run Kodi (and nothing else). Previously I used OSMC to run Kodi and some other things (steam link among others). You can use an app (kore) control kodi, which is very conveniant. RF remotes work well too, apparently.
Another thought: I use grocy (or at least try to use it) to have an overview of my stock and know when an open item in the fridge neeeds to be used before spoiling. But I just use a shared note on nextcloud for shopping, which is good enough for two people. But of course there is no meal planning or recipe management
I like to see all the technical aspects of it, but the actual transportation part is so bad for me. And not to speak of the emissions it creates. I nlw try to avoid planes, trains are nearly as interesting and much more pleasant for everyone.