First, I agree, you should invest a lot in a diverse portfolio that is likely to leave you with assets in the future. But if you don't want to seem odd in the future, make a policy of - well - consciously being odd in the future. Get skills that are timeless - learn history and literature. There are always people who will seem out of place, and if you let people know up front you're an ancient history or english professor obsessed with reenactments, your knowledge won't (hopefully) be out of date and strange mannerisms will just seem charming. "well, of COURSE he wears a cravat - he's in CHARACTER!" You can pretend to be ignorant of social customs while you actually learn them.

HISTORY & LITERATURE:
First, I agree, you should invest a lot in a diverse portfolio that is likely to leave you with assets in the future. But if you don't want to seem odd in the future, make a policy of - well - consciously being odd in the future. Get skills that are timeless - learn history and literature. There are always people who will seem out of place, and if you let people know up front you're an ancient history or english professor obsessed with reenactments, your knowledge won't (hopefully) be out of date and strange mannerisms will just seem charming. "well, of COURSE he wears a cravat - he's in CHARACTER!" You can pretend to be ignorant of social customs while you actually learn them.