I know I have a more conservative view of relationships, but I would dread dating someone like jameswift.
You can look at relationships in two ways: a consumer relationship, or a covenantal relationship.
A consumer relationship is like the one you have with your car or your grocer. You just want the best product at the best price. When something better comes along, you go for it because the product is more important than the relationship. So if you're in a relationship with someone, and someone just happens to present a much better package, of course you would go for it, doesn't matter if you're dating, married, kids, whatever.
A covenantal relationship is like the ones [most] parents have with their kids. You've made a choice and decision to love someone no matter what happens because the relationship is what's important.
Which one do you think would be healthier for people? Which one do you think someone would be more inclined to want to commit to?
Which one do you think produces more honesty and security? The one where you always have to put on your best face, hoping they won't leave? Or the one where you be yourself and grow together?
It depends on your worldview. If you think, OP, that it's all about you, dump that girl, enjoy life, when it gets 'boring', you can settle down, find someone else, and live a boring life together. Then when you need some excitement, just divorce and 'buy a lambo'. nbd. YOLO!