I lost mine at 29 with a couple of situations in my 20's it can happen easily if one isn't careful.

>Living in small towns with populations less than 6k
My highschool class was less than 40 and many girls got snatched up by older dudes.
>Going to tech schools with fucked gender ratios
Went to one with a 2:3 female to male ratio, plain girls got all the say.
>Onetising on girls who ended up being lesbians
females can waste your time if you aren't careful
>Moving to california
People are extremely anti-social here, they think 10 miles is far, and many tech groups swoon over the one girl at networking events

You can easily fuck up if you aren't careful.