Women after 30 are fundamentally different from 20-year-old girls. Their feelings, emotions, even the edge of sexual arousal differ. They begin to be "blooming roses", but often do not fully understand who to give the scent of their buds to. Men after 30 are no longer young men, but also "not quite men." They are much more confident in themselves, they no longer want to deal with naive and inexperienced girls, but they are also not ready to accept a stronger or more emotional sexual partner.
It's like a crossroads, off-road. We see the whole buffet of fans and admirers, but we have already tried almost everything. Sometimes you want something exotic, but like all exotic things, it can quickly get boring.
By the age of 30, many are married or married, but this does not save us from the spirit of adventurism, the desire to experience magnificent emotional upheavals again and again, not to lie to ourselves, but to be led by our feelings and emotions. Each person can recognize that in a joint life and living it is impossible.

“No matter how much you heat up your favorite soup, it will always turn out to be just soup.” Not everyone succeeds in warming up feelings for each other and inventing an idyll of family life, and not everyone needs it. Watching married couples, I often admire and wonder how they have to break themselves, hold back, lie at every step. And this often leads simply to psychological disorders.
I don't know a single married couple where they would "pray for their relationship" day and night. Even if they play such a game, anyway, one of them is more than unhappy ... This does not mean that there are no happy families. Of course they are, and they should be! But there are no happy families that make everyone and themselves think that they are! At its core, a person cannot belong to another all the time - this voluntary slavery ends sooner or later, and, breaking the usual way, leads to painful emotions on both sides.

After 30 years, almost everyone understands this. That is why it turns out that the choice of a partner at this age is more conscious, if I may say so, more correct.