Love is a chemical process, you can’t really choose who you fall in love with. There are all kind of relationships, not all are based on respect.
You don’t have to pretend anything, I know quite a few couples where one partner is an atheist and the other one is a believer.
Niche communities that took years to built up and that I can’t find anywhere else. For example Esperanto speakers are quite active on Twitter. They also have their own Mastodon instance, but it is not the same. (I use both now)
I would never put something in my brain that doesn’t at least have a public API documentation. If the company discontinued the product I want to be able to keep using it. Open Source software would be best.