The abolishment of the minimum wage, for instance, is not going to help anyone bar those who want to abuse workers who are seen as a factor of production. In fact, I see no reason to even discuss such positions as I find them to be little more than reproduction of Chicago school points of views, which rational people have long seen as being scams which make the business community happy.
I wouldn't want to debate either if the side I'd taken was patently false. If you had ever run a business or managed a payroll then you'd be aware of this. Raising the minimum wage raises the floor for wages but not the ceiling and thus pushes people out of the job market. Of course in this case it is the young and unskilled that get pushed out so the reality is it hurts the exact same people it is supposed to help. This isn't debatable but rather verifiable fact. It is nothing more than a ploy by politicians. Looks like it worked.

In America you have waiters earning 2 dollars 15 an hour as a basic wage, you have a minimum wage of something around 7 dollars an hour.
You keep repeating the bolded part. As I stated when I ran a bar my employees averaged around $20/hr. Either you are being willfully ignorant which considering your usual miseducation on anything American is entirely possible or your are intentionally stating false information to help your own position. Regardless you should be ashamed. Minimum wage employees make up 6% of all US workers with over half of that group being part-time employees. It isn't meant to be the minimum amount for a person to live on nor do I care what it is in the UK or see how it is relevant. If it were about the minimum needed to make a living then it wouldn't be a national standard due to varying costs of living throughout the US. Which further makes my point it is nothing more than a political point used to dupe voters. If you are insistent on making the comparison, I'd suggest that the unemployment of young and unskilled in the UK is largely due to your high minimum wage.

Why should you rely on the customer to tip?
Because it is a superior system for all parties involved. I already explained why. If you'd ever worked in the US service industry then you'd realize that.

It is pure corporate greed and it doesn't take much for McDonald's to simply clean its act up and pay a fair wage.
A fair wage is exactly a fair compensation for one's labor. Flipping burgers isn't exactly a technical gig. the fact that just about any adult could do the task is indicative of the wage it commands.

If you cannot pay the worker a wage without relying on my charity
It isn't charity it is how much you feel the service was worth and a far better way to do business. You get superior service and a cheaper product, the employee gets to make a wage FAR superior than almost any hourly paid employment they could find and the employer gets a motivated employee, lower overhead and ability to hire more workers w/o raising prices. No one in the US is advocating changing this system and definitely not the service industry. You should probably mind your own business.

My first working wage almost 2 decades ago was more than double what an American waitress will recieve as a basic payment minus tips.
Yes but w/tips there are waitstaff and bartenders that probably make more than you do now. They wouldn't have it any other way.

viewpoints like yours are a problem.
Viewpoints like yours are ignorant and bigoted. Quit telling people how to run their own lives, how much of their own money they should keep and worry about your own.