This is the debate I had today...
I said at lunch I would rather go to a women's event at a church than a singles' event. This is my reasoning. Being single in the church culture is negative. Like it or not. Being a woman for most people in the world (unless they are sexist) is not negative. I'm perfectly content with my singleness (1 Cor 7 is very real to me).
But, I think lumping all singles into the same category just because of their marital status is hurting the ministry - or not utilizing it to the best it could be.
If you are trying to reach all singles with one singles event a week or whatever and never breaking them up into their respective "categories" - than it will never be the fullest it can be.
There are singles of every age (newborns are singles). But, the ones most singles ministries reach are 18-death who don't have a ring on their finger. But, if you were able to break up college, younger singles, divorced singles, always single older adults, then you can be more productive. But, then you lose the cross-generational effect that has to happen in a church.
But...why do we have to be segrated in the church at all. Married people aren't segragated - they are the church. So are we - we just don't wear a ring on our finger.