Cause things change
I have an acquittance (not really a friend, exactly, but a friend of friends) who is one of those travel bores, forever flying somewhere and then telling everyone about her trip. But last time I saw her she was complaining about how it was harder to connect to people, how her "friends" flaked on her much more frequently, fewer people wanted to meet, etc. She attributes this to greater rudeness and the spread of social media.
I have a different explanation. She's reaching into her late 30s now. She's never been hot but was okay... I've definitely done worse. I'm not a fan of the concept of "the wall," but she has hit it. Is hitting it. Suddenly, the ease with which she traveled is going down, because a lot of guys who used to grease the skids for her aren't doing it anymore. Or they're willing to do less for the same output. But she can't figure out why. Or she chooses not to think about why.
She also has a long, complicated story about why things didn't work out with "the love of her life," which isn't complicated. Now she's older, has no real career, and maybe she'll keep doing the travel thing. We'll see where it gets her, in the end.