My daughter was 21 and she dated a 31 year old guy. My daughter was in college and just getting her act together. The guy was a nice earnest guy, but he just could not get his shit together. Holding my tongue was tough.
I thought that most 31 year olds would not find much in common with a 21 year old.
Thankfully she realized he was a dope.
LOL yup not a lot in common.
After WWII, my dad went to college and met and married my mom—He was an older student...she was 8 years younger, though in her mid twenties. There were many times my mom felt like my dad did not understand things or like things she liked as he was older and in her opinion, of a different generation—tho there were many wives in that situation at the time...
At least by age 21, girls have been around the block a few times and not likely to be taken advantage of...Like you, I would wonder why is he interested in my daughter, and I would have had to have gone in in for stitches on my tongue for biting it so hard LOL
As a mom, I would not have been pleased to have dearest daughter bring home a 30+ year old when she was 16 or 17—neither would my father have been pleased had I done the same—and that is an understatement as he had a shotgun filled with rock salt at the ready for such occasions though thank heaven, I never put him to the test ;)