You cite automation at McDonalds as an example of minimum wage jobs being reduced. This is irrelevent to the argument of the minimum wage, as no matter how low the wage is, unless your workers are slaves, machines will always be less expensive.
Minimum wage jobs aren't meant to be careers, but people get jobs not for fun, but so they can get money to live off of. At the current minimum wage, this is impossible in most places around the world. People are struggling to get by on the jobs they can get.
You've got a success story? That's nice. Not everyone had the same opportunities as you did. Your story is an anecdote and has no statistical significance in a country of 330 million.
- - - Updated - - -
This is disproved by simply looking at history, back to the Gilded Age when we had no minimum wage and people were stuck in whatever dead end job they had.
- - - Updated - - -
This is proven to be wrong. Raising the minimum wage increases purchasing power and improves the economy. While it does raise the cost of labor (and can raise the price of goods) it does more good than harm.
By giving workers more purchasing power, more goods and services flow in the economy. Keep workers at a poverty wage, then they can't participate in the economy, the economy stagnates, and the wealth gap increases even further.