Weather warmed up really early this year. This Suzuki Intruder C800 really looks good after removing the front fairing. Considerably less buffeting too, with the screen anything over 80 km/h was really shaky.
Pro tip: use symlinks instead of copying files, the backup is near instant!
You can export and import calendars and contacts as .ics and .vcf files from/to Nextcloud.
The mobile apps even have a setting to do this automatically on a schedule, they're saved to your files in Nextcloud. It's a bit strange it's not a server-side feature, but it's there anyway.
Many Nextcloud apps only store their data to the database, if you end up using those, you'll be reliant on Hetzner's backups with Storage Share, and you can't get those for yourself. I don't think you can get a db dump from Hetzner even via customer support.
A VPS will start to get expensive if you have more data, but you can just lift-and-shift that to a home server later.
I really don't understand this "Nextcloud does too much" rhetoric, the standard bare metal installation is basically just Files, Photos, Calendar and Contacts. Also a built-in text/markdown editor. Everything else is an add-on, which needs to be installed separately.