Would fire every last employee that walked off the job if I owned a Mcdonald's franchise. Would teach a valuable lesson ...
When those former employees come back to the store the following day to find that there jobs have already been replaced, they will come to the realization that "hey, maybe minimum wage or slightly above it was not so bad a deal considering how easy and effortless this job was."
Your average Mcdonald's worker is in the 18-25 range ... of course you aren't going to make much money during this period of your life, you have virtually no skills and even less experience. The skills things is not your fault as schools suck, and they will only get worse the more money that is dumped into them, but still you have no experience at this point in your life regardless.
I'm 24, and I make 9.50 working retail (3+ years in same job) and I am happy to make it. Is nice to have a little job while I aquire skills (well... in theory ... like I said schools suck) in college. I could never imagine walking off my job. Also, I am actually required to have at least some skills in sales and upselling on my job ... I have never had a Mcdonald's employee try to upsell me on anything. They have pre-recorded messages play at most of these places now to do that for them ... kind of makes me wonder what they are even doing most of the time in these restaurants.
In a perfect world, we would not have a minimum wage at all, and market forces would determine the real value of your labor. Also, unemployment would probably dissapear completely as well ... but, like I said, perfect world.
As others have said, get a second job, go to school, or do really well and get promoted (managers at fast food places don't do all that bad for a job that doesn't require a degree).