Good observation, PsychTau.
Whoever said they only knew one person under 25 who got married - dang!
I have a ton of friends getting married as soon as they finish their undergrad (one of them while she was still in school, but her husband has graduated). Though all of these have been non-Greeks... (though a lot of my Greek friends from Memphis who've graduated are in serious relationships and may get engaged soon IMO)
I think it's different in different parts of the country. My co-worker from this summer said she was considered an old maid when she hadn't married by 18

(she's still not married - she's 42 now - she's from a small country town).