My husband and I got married young (22 and 23), and it's never held either of us back from traveling or going after our pursuits. We've had our own hobbies/interests (some separate and some together), earned graduate degrees, have successful careers, and traveled extensively, including living abroad for two years.
Now having children, on the other hand, really does change one's lifestyle. We still figure out how to have fun and travel (sometimes without the kids--horror!).