There are practical reasons for the mid-20s dividing line, and most of them are pressurized to two biggies: Education and Money. It always turn out, the more years of higher education a woman has under her belt on her wedding day, the lower the chances that she'll get divorced ... and by 25, she's more likely to have earned a degree or two. "Educated women tend to be more confident about who they are and less willing to settle for a man who doesn't meet their standards". Odds are that by 25 you're also supporting yourself, so there's less incentive for you to rush into marriage because you're seeking financial security from him.
But the marriage-related benefits of working and having money of your own go beyond feeling secure. Learning to budget your cash carefully when you're single will help you avoid financial problems which is one of the main causes of couple fights — for the rest of your life. And juggling responsibilities, dealing with differing personalities, and resolving conflicts shapes you to develop skills that are necessary for maintaining long-term love.
At age 25, you've had time for some crucial life experiences, including a relationship that may have improved your Mr Right. "You've probably dated enough to have a better idea of what you don't want in a man, which makes it easier to know what you can live with and can't live without". The most important aspect of waiting is that you'll know what your goals and values really are. Marriage is a lot easier if you two share a similar outlook on life. But given the choice, you might consider putting off the big day until your mid-20s or later.