Apparently adolescence is getting longer with people not taking on an adult life to they get past 25 sometimes. Umpteen years in college, bad economy keeps you living with parents etc..
If I lived to be 150 I might spend 40 years dicking around rather than 25.
Of course this isn't the case with Janeway who was engaged, a starfleet captain and clearly living an adult life. But it could be.
um, no. The trend you're referring to is strictly economics and that's it. If jobs were available, they wouldn't be delaying their adult lives just because they like to "dick around." Psychologically and biologically they're adults.
adolescence is not getting longer.