DP and I have been together 11 years, one DC of 2.5. I feel like it's the end of the road, but it's also not awful. We're basically housemates with no shared interests. We literally never do anything as a family. I feel like the maid a lot of the time, I moved out for a couple of weeks 18 months ago and wish I hadn't come back.
It's not awful though. I feel like if it's not dreadful I'm doing something wrong if I go. I'm also quite aware that I'd be starting from scratch just as I turn 40.