The experience also illuminated another fact: regardless of how you travel, as you get deeper into your thirties you might be the only person your age out on the road at all, whether it's in the hostels with the twentysomethings, or on the fancy cruises with the sixtysomethings. In your fourth decade, your compatriots are mostly at home, working, raising humans, getting husbands through rehab, living for someone besides themselves. Suckers.