<human>: Been dating my g/f [22] for around 3 years now, and we have a great relationship. We hardly ever argue, have a healthy sex life, and interact well with each others social circles. Here's the rub. We recently returned from a holiday with each other which we both enjoyed, although it prompted me to consider the forward direction in which our relationship is progressing. I love her, and she loves me but we want different things in the future. She wants kids and has a more traditional plan, wheras I don't think I do, and aspire to galavant and travel as a free agent whilst I'm young.
Is it wrong to throw away a good loving relationship because A) I have made a self promise that I will not be collared and tied down by anything whilst I'm young, and B) I find the notion of staying in a long term relationship is ultimately wasting the time of my g/f if she wants a partner to settle and have kids with?
I love this woman, and I know breaking up for such "hypothetical, future" reasons would crush her, not to mention make me look like an asshole, but I can't help feeling that something has to happen in order to avoid cheating myself out of a misspent youth.

Can you succinctly summarize the text in 1-3 sentences?
<bot>: Considering leaving a good relationship because I don't wanna be that guy who marries the first girl he has a long term relationship with and ends up anchored down, resenting her for it.