[567arlo]

Not qualitatively or remarkably different than 20s though, in the 30s, as Carl indicated. After all the decade distinction is arbitrarily chunked off, whereas actual change in these attributes is linear/gradual. In addition I've seen many cases where each of these experiences improve over time, e.g. someone in their 50s/60s being finally exposed to the wonder and reality of other cultures, whereas in 20s, it may not stand out as much compared to other youth/20s experiences.

[CalRobert]

I remember being in my early 20's and hosteling around and doing pub crawls and the like and thinking "man, everyone must stop having fun when they hit 30". I imagine you're less likely to do the pub crawl/random hookups/wandering around a new city at 4 AM thing in your 50's than in your 20's (though now that I say that I know some people in their 50's who definitely keep up just fine...) Now that I'm a good way in to my thirties I definitely do less stuff like that, but then, life hasn't proved to be too dull.

Then again, I still remember fondly a couple in their 70's I met in a hostel in Prague who were finally doing their round the world trip. They were the exception though.

Regardless, though, I think that life is generally different at 40+ than at 25 and that will be manifested in travels. Even if you're the same, the folks around you won't be (people will definitely treat someone who looks 45 in a hostel differently to someone who looks 25). It's not worse (and in some ways it's much better; I like not being broke), but the experience is definitely different.