Sad fact is, its supply and demand. The boys can bide their time (to a point, and then they are “old” and unmarketable), but the girls have a shorter runway.
So with a gun to thier collective heads, the girl’s side will promise anything to get a boy to say yes.
Not to worry, though. I’m a firm believer in what goes around comes around. If you were held up at gunpoint by the boys side, not too far down the road, best bocher will find himself at the mercy of a not so smiling mother and father in law when it comes to making choices that affect the future of how the house runs (where to vacation, schools to choose, clothes to buy for yom tov). Yet with zero ability to make any of these descisions on your own (as they cost $$$$) best bocher will have to swallow hard and say “thanks” (and silenly berate himself for not having the means to fend for himself)
But hindsight is usually 20/20