To go into greater detail would take me time...so I won't.
My main “objection” is incompatibility...more so in her mind than his.
30 being a kid is a tough argument to make.
If you’re a 45-year-old man wanting to start a family, marrying a woman your own age is self-defeating, she’d already be at the end of her childbearing years. You’d get the woman without the most valuable thing a woman brings to a marriage. Man would have to be nuts to look at women any older than 35.