Apushatayid,
There are strange girls also. Many (certainly not all) of the boys “left over” are not married for very good reasons. It’s not nearly as often for the girls, who have the numbers stacked against them.
Ubiquitin, the kashas are more difficult when you ignore the teirutzim.
I’m still waiting (not holding my breath) for an explanation of how 112 girls can marry 100 boys as long as they date evenly.