I used arch for ~5 years but recently switched to Nixos. It’s been such a long time since I dared to ‘play around’ with my setup to try things out without worrying about how I’m going to reverse them. Also really enjoying the added benefit of keeping all my fixes and hacks versioned in a git repo.
I use Borgbase as one of my backup destinations and you can set it to send an email if they haven’t received a new backup for a number of days.