Or rather, are they attractive enough for some man out there to marry?
It is an undeniable fact of life that men like younger women. Whether a man is 25 or 75, he'll like a girl of 18. 18 to 21 is physical prime for women just like 30 to 35 is the prime for men. There could be exceptions, but it's just (biological) reality.
It's also true that feminists actively try to deny it and encourage younger women to pursue education, careers and traveling well into their mid30s and even later. On the other hand, there are male internet gurus who correctly criticise this trend as based on a lie but then turn around and promote another pretty lie, namely that older men have a chance with young girls.
In reality, young women prefer young men. Realistically speaking, an average guy of 50 has zero chance with a girl of 18 or 20, unless he is wealthy, very high status etc. There are exceptions to this rule, but still. Heck, when I was 18 even guys at 30 seemed like old men to me. They were adults, I was still a teenager.
This holds true even for countries with arranged marriages:
Muslims have the widest spousal age gap (6.6 years between men and their wives or partners), followed by Hindus (5.6 years), Christians (3.8), Buddhists (2.9), the religiously unaffiliated (2.3) and Jews (2.1).
Notice that this "widest gap" is 6.6 years, not 30.
Sub-Saharan Africa has even bigger age gaps:
Large age gaps are especially common in sub-Saharan Africa, including in Gambia (14.5 years between men and their wives or partners), Guinea (13.5) and Mali (12.9).
Still not 30 or even 20 years though.
A man in his early 40s will probably find a girl of 19 much more attractive than a woman of 30, but does he realistically have any chance? Attractiveness is relative. Both men and women should ditch unrealistic expectations and get down to earth. Neither s8x should wait too long to settle down.
(Of course, it will be different for the divorced folks and widowers/widows).
Oh yes, and a woman at 30 is usually plenty fertile still. There is a reason an average menopause age is 51, not 31.