There's nothing wrong with you if you aren't about that married/2.3 kids/white picket fence life; a lot of people aren't. You can still "live life to the fullest" even with those things, though, and you never know, your outlook might change as you get older (I know mine did; I thought I'd be too busy with my career to even think about marriage, and the thought of NOT getting married didn't bother me at all).
I think you can still have a career, travel the world, etc. when you're married. My husband and I put off getting married for 3 years. We're still young (early 30s) but we grinded when we were dating because we knew that once we got married, we wanted to do certain things, and we made sure we afforded ourselves the opportunity to get to that place in our careers where we could afford to do really fun stuff LOL
I still get to do all of the shyt I wanna do because I have a partner with similar interests. We travel to a different country every year, take weekend getaways/cruises, etc. My life feels "fuller" now because I have someone to share these experiences with.
That's just my little opinion LOL