I'm 37. Your age fits in with my theory, which is simply...
Those from a different generation have a different outlook on hard work, effort, and achievement. Our age bracket has nowhere near the same sense of entitlement or "fairness" that a large share of the folks 15-20 years younger than us do. Equal opportunity does not mean equal results...phrases like "the cream always rises" have been replaced with "everyone gets a trophy". This group-think has degraded the value placed upon individual effort and accomplishment...it's the same reason why people who make fries feel they deserve $15 an hour...if you want $15 an hour, go get a trade skill...but that's hard and takes effort and bosses want things like on-time employees who are value added to a company.
So for everyone still reading this, here is the truth: YOU DON'T GET PAID FOR THE WORK YOU DO FOR YOUR EMPLOYER, YOU GET PAID BASED ON THE VALUE YOU BRING TO YOUR EMPLOYER. WHEN YOU FEEL YOUR VALUE OUTPACES YOUR COMPENSATION, IT'S TIME TO ASK FOR A RAISE OR GET A NEW EMPLOYER.
Someone may be the best line cook at McDonalds, but that doesn't mean you are going to start off being paid like an executive chef when you finally start working at a bigger restaurant. So you cook at McDonalds, and then you become a prep cook at Applebees, and then a chef, and then you get into a real steakhouse and repeat until you've been a prep cook, a sous chef, and finally the head chef at a fine French cuisine place and making the money that you dreamed about. And as your cooking brings more people in to the restaurant you can start to negotiate for better wages...and if they aren't paying enough, you shop your resume (and reputation) around and see what someone else will pay for your services.
The world owes you nothing. The world owes UFC fighters nothing. The UFC owes the fighters exactly what they negotiate for. If you want more, earn it.