Smurf, based on this thread and a few of your other threads, I have to say that you seem unduly fixated on what you have as compared to others, especially people who are wealthier and older than you. I can assure you that "keeping up with the joneses" leads to nothing but grief, emotional and financial. I would urge you to resist trying to do that.
As a 40-year old with an Amex in my pocket, I can assure you that it wasn't that way when I was your age. I was just getting out of law school, in significant school debt with $9 to my name. I didn't have much of anything until, to be frank, fairly recently. Even when I started to earn a decent income, I resisted the urge to go into debt for the things that I wanted. Instead, I paid off my school loans. I saved. I bought a house. I invested. I gave to charity. I saved some more.
While I allowed myself a few nice things and some budget European vacations, I tried very hard to resist any sense of entitlement. I also tried to resist envy, even though I have many friends who have much more than I do--either because they have a more lucrative career, inherited it or married into it. The trappings of wealth are superficially nice, but I'd rather value my life by other things: my health, my dear BF, my friends, my volunteer work, my pets, my hobbies, my career.
I simply hate how it feels to desire all the time. It's incredibly toxic. Instead, I carefully evaluate the wants that I have and measure them against what I otherwise want and value in my life. Because of that, I live well within my means. I refuse to buy things that I can afford. I find much more joy in my financial stability than I do any material item.
I don't fault you for wanting a really nice bike, and if you can truly afford it, knock yourself out. But if you can't or can only afford a less expensive bike, then accept that with grace and focus on other things. If your friend in Portland advised you to buy the bike you want but can't afford just because "you're only young once," then I assure you that he did not give you the best advice ever.
I understand that you live in a town where there's lots of money and work with people who harass you about your bike. So, I'm not saying it's going to easy to resist wanting more than you can afford, but ultimately, you can choose to ignore it. If nothing else, please keep your bike lust in perspective. You may decide to eat ramen noodles for a year simply so you can afford to buy a bike, but don't forget that lots of other people eat ramen noodles simply so they can afford their rent or buy medicine for their kids or keep the heat on during the winter.
Frankly, I think you might benefit from getting a a dose of reality/different perspective in Boulder. I would encourage you to volunteer with a group that helps people who are disadvantaged in some way. IMO, getting outside your own head (and away from the people who put you down all the time), might do you some good.
Live with intention. Walk to the edge. Listen hard. Practice wellness. Play with abandon. Laugh. Choose with no regret. Continue to learn. Appreciate your friends. Do what you love. Live as if this is all there is.
--Mary Anne Radmacher