To quote myself I said "smiling faces, parties or high jinks[sic]". That doesn't necessarily equate to getting wasted in bars, or indeed betray any particularly sort of conventional group-think. I'd argue getting married (and to a much lesser extent having kids) constitutes a more real subscription to conventional life choices. Broadcasting it (semi) publicly over Facebook arguably makes it an even more overt stance. There's nothing wrong with that of couse.
Taking pleasure in a close friend's happy life moment in a real and genuine fashion, i.e. by interacting in real life, is quite different to being confronted by the over zealous activity of a Facebook "friend". It was the latter I was complaining about. And I agree, a particularly ruthless "friend" cull would largely solve the issue.