Yeah, I know she's hot, cool, funny, etc. and you don't think you can live without her. Take my word for it - somewhere there is someone hotter/cooler/funnier and you CAN live without her. What you don't know yet is your criteria for what you are looking for is going to change in 20 years (I know 40 seems old, but that's just half your life, amigos). You should be doing all the cool things you want to do now - travel, ride fast, get a masters degree, learn to fly an airplane... whatever. When you finally settle down you will have a whole new set of responsibilities and to be a good father/husband, you'll have to set some of those cool things aside (but don't ever let go of everything... some of those cool things - like motorcycles - make you who you are). Don't get me wrong, being married and having a family is pretty fulfilling as well, but it's damn different than what you can get away with in your 20's... so enjoy those years because there's no going back.
Bottom line, been there, done that, made all the mistakes. Don't get married until you are 35+. I understand that might be bad advice for 10% of you, but the other 90% will thank me 20 years from now.