<human>: Could you distill the essence of the text into 1-3 sentences?

I am 25, have a good job, and have the opportunity to make quite a good chunk of change this coming year and plan to save and travel. I have always been super motivated and driven and put myself through college and am always restless for life's next journey. She is 22, has a starter job and is still in school after a few setbacks. 

I love her and it has been a great 4 years. We get along great and she is always down to do whatever I come up with next.  However, after all this time, I am not anywhere near a place where I would feel comfortable marrying into so many unknowns on her end. She doesn't share the same motivation as myself and I am starting to get the feeling she is planning on getting a ring and hanging up the work towel for the rest of our lives and I am not ok with it.

So my question is...is it a sign that I can't see myself getting married to my gf after 4 years? Obviously, there are plenty of other factors in this equation, but I feel like I should know 100% by now. I could see it happening once she has worked out her end, but I am not sure I can keep waiting to find out.  Am I being selfish for wanting duel incomes for at least till kids?
<bot>: Have been dating for 4 years. Is it wrong to not see marriage in the future? Is it selfish to not want to be the only one making money in the relationship at such a young age?