Well, as far as this part of Europe goes, we have a lot of live-in boyfriend-girlfriend relationships, few unmarried families esp. with children (just some hippie celebrities, really, I can think of only one couple), but we don’t have the more non-standard “lifestyles” (same-gender, polyamorous, openly open…) and one-night stands aren’t norm. We used to have a more noticeable presence of “non-sacramental marriages” which was the term for civil-only marriages by Catholics. That was typically post-divorce. There was noticeable pastoral effort directed that way and I welcomed that because I didn’t feel those people should be excluded and it was a great idea to try and convince them to regularise their situation (few people even know of nullity proceedings, by the way, and some refuse to believe it’s possible no matter what canon law you quote to them). In fact, I remember for example a priest (an orthodox one) making difference between a civil marriage and no marriage at all. Right now, sadly, it seems practically everyone past age 19-20 (possibly 18 by now) is sexually active and tends to live with a boyfriend or girlfriend if practicable. Don’t know about the average age for marriage, but it seems to approach 30 (as far as I can observe, after 26 among university graduates or undergrads). It’s not rare to find ringless people, but it’s exceedingly rare to find someone without a boyfriend or girlfriend. People who don’t have one - excepting singles by choice (there’s no big singles culture, though some people claim to be noticing a problem - tend to be introverts, shy people, people with significantly below average people skills, or practicing and abiding Catholics who are among those who don’t practice or abide. With me, it’s the last factor, plus probably some personality things and insufficient or ineffective effort - as I said, I’m not one to waste time networking unless it’s discussion of interesting subjects, besides, I meet few people I’m interested in socialising with and there are compatibility issues. Lack of revenues is definitely contributing, as with everyone, I guess. Some initatives for “singles” (I hate the word, it implies affiliation with the singles culture) are being started by some churches or ministries and there are some secular commercial initiatives on the Internet that I prefer not to use. Most people still seem to meet someone the natural way - university, church, maybe work, sometimes some accident of life. I think I’ve heard a prayer for this category of people once in my church and I’ve also heard a couple of St. Jude intentions in the church near the university from ladies praying for a good man to share a life with.
As I said, though, people in irregular situations need all the care more than we do because their situation involves grave matter and is dangerous to their souls, while with us it mostly comes down to temporal problems. At least we haven’t just woken out of a brief cold period with the Church with a family to look after and a wife/husband who is not a wife/husband no matter what the civil law says (add brother and sister irrespective of what’s been before and of the fact there are years ahead to live like that). I’d take my situation over theirs any time with a huge sigh of relief, really.
I suppose what bugs you is that some people apparently seem openly to reject the Church’s teachings and yet still insist on being involved in parish life, ministries and so on. Well, I wish there were some way to make it clear that their choices are unacceptable (which they are) and cannot be condoned (which they can’t), without jeopardising the chance of at least keeping them around in the hope they will experience a conversion of heart. As far as what when they do experience it, however, I insist they’re as good Catholics as any, possibly better (more conscious, more knowing the other side - and consider the factor that those who have been forgiven a lot love a lot). Granted, there are always some temporal, psychological results of a turbulent past (including porn, which does’t need the assistance of a partner) that cannot be said not to exist or complicate a relationship, but they aren’t impossible to overcome. From a theological point of view, our ability to overcome such things is probably limited only by our ability and willingness to open ourselves to God’s mercy and grace, notwithstanding temporal punishment (that indulgences deal with).