I don’t have anal sex on a regular basis, but I do enjoy it from time to time. I use plenty of lube and it doesn’t cause me any discomfort, so I’ve never had any issues to date. Life is full of risks.
I find threesomes to be a beautiful celebration of human connection in a way that transcends just making love with my partner. I experience them as very life and love affirming. You should definitely have the sex life that feels best to you.