Is it better to spend your twenties refining the art of selfishness rather than selflessness?

If, as the statistics say, one has an 80% chance of divorce if one marries prior to age 28, and if, as the statistics also say, one has an 80% chance at a long and happy marriage if one marries after the age of 28, is it better to spend your twenties abandoning the idea of compromise and sacrifice and instead replace these supposed "virtues" with artless things like self focus?

As a twenty-something in the throes of what very well could or very well could not turn out to be the "final" relationship, I wonder, am I making things worse for my future self, romantic partner and loved ones by playing nice and learning to compromise in my current relationship?

There are certainly things I would do if I were not otherwise engaged (metaphorically, not literally).

1. Travel Nepal, Bhurma, Bangladesh, Tibet, Argentina, Brazil, and Peru for a while... 6 months to 1.5 years.

2. Move to New York.

3. Move to Paris.

4. Move to Dubrovnik.

5. Move to New Zealand.

Concurrently with 1-5. Probable gallivanting with whoever I like (these people just happen to be of the male persuasion).

Now, you might be asking me, what are you doing sitting around in one place right now. Take that lovely boyfriend of yours and bring him along for the ride! But, we have one teensy, tinsy problem on that one and it starts with "v" and ends in an "isa". Rhymes with Lisa. I think you might have heard about it. Not mine. His. So I am stuck either here with him, or there without him.

Now where was I? Ah... To be selfish or "in it to win it"? Is it in my best interest to take off now, enrich my life with these glorious/challenging/preposterous experiences? Shake things up completely? Maybe I just need to get these urges out of my system? And what happens if I don't? Will I end up a 55 year old married person and suddenly realize all I missed and feel restless and resentful?

On the other hand, the guy I love is far beyond any I have dated in the past, and frankly, I have yet to wish I were with another since we started more than 2 years ago. If I up and left, even if we did try long distance, would I be making a horrible mistake? Would I search in vain for another who is just like him (since surely some other lucky woman would snatch him up by the time I got back)?

So many, many questions really, and I'm not sure I have the answer to even just one. I suppose the lucky thing is, I am still 3 years away from my statistical tipping point. 28. So, maybe, just maybe, I will inch just a little bit closer to the answers before I start tipping the scale too far left or right and fall off altogether.