Ip addresses. Netbird uses the same ip when external, while tailscale has a different internal one. So I need to reconfigure the home assistant client differently for each.

I tried moving from tailscale to netbird, and while I did get access to my home assistant instance, I got unauthorized errors when trying to load mini graph cards on my dashboard. Instead of tinkering I went back to tailscale - at least for now.

I mostly just have it handling file,

I needed something for storing important documents and installed nextcloud. After adding a single file I was reminded of just how much I hate SharePoint and removed it again.

What benefit do you get from storing files in nextcloud over just using a file system directly?

True. But there are still degrees of privacy you can achieve without going to extremes.