I guess one of the true problems is that people ARE waiting to get something OUT of the marriage when they are really supposed to be PUTTING into the marriage!!!!
That’s probably the biggest issue.
All suggestions that the unfortunately high divorce rate is due to issues unique in the frum world (parental support for kollel, not meeting enough times, pressure to marry by a certain age, etc.) would have to demonstrate that the divorce rate is higher in the circles which practice these ideas than in the circles which don’t, for these theories to hold any water. I don’t believe, though, that the divorce rate for kollel couples, for example, is any higher than for non-kollel couples.