I have two sons, 14 & 16. I split with their dad about 10 years ago and have been single ever since, as has he. Both dc are adamant that they won't have children and will live alone, which makes me feel really sad, especially the latter part. It also makes me feel guilty - as if ex and I have given them such an awful model of relationships that they have been put off for life. It's not something that's discussed a lot, but when it is, I feel shit.
The relationship while we were together was okayish. We split due to infidelity on his part, which the dc have never known about (obviously it didn't last) but the marriage had fizzled out by then really anyway. They see ex very regularly and, while he's not great, there have been no major dramas. The split itself seemed to go remarkably smoothly as far as the dc were concerned - no tears, no rows and ex saw them daily at the marital home for the first year, which seemed to aid the transition. They never begged us to get back together or anything like that. They stay at his four nights per fortnight now, and I know they get fed up with moving stuff between houses but again, not a huge deal and ex only lives a 5 minute drive away (it's walkable but I do lots of driving back and fore when needed). Ex and I don't get on in that we don't really speak but there have been a number of events/incidents over the years where we have been together and civil and it's fine.
I just worry that in both staying single, which I know is unusual, we have failed to give a positive model of relationships and they think being on your own is normal and desirable. We also don't have a large extended family on either side so that doesn't help either. Neither ex nor I have large friendship groups that the dc benefit from- he has friends he sees through his hobby but the dc are never involved, and I am focused on work with a very small group of friends. We moved just before splitting and had had a larger circle of family-based friends before then, but one was the person ex cheated with and, while it would have been possible to keep in touch with the others after we moved (20 minute drive), I didn't want to as it reminded me of his cheating and they knew her, so I essentially ghosted them all, which I regret now and, again, this feels like I have let the dc down.
Both dc seem to have a goodish circle of friends. Ds1 is part of a large group and has never had what I would call a best friend (or b/gf) but seems very happy and is out quite a lot. Ds2 has a smaller circle and is out less and online more. He's more of a worry but, again, does seem happy.
I just worry that they are both consigning themselves to a lonely life because of us. Does anyone have experience of similar issues and how have they worked out?