1. A considerable amount of coins have already been mined and a significant amount will be minted. Anything over 20-30 million coins is way too much and will dilute the value of any coin. When a coin has a total supply of 18+ billion the coin is pretty much doomed. Over time Doge and other coins will also suffer because too many coins are in "circulation".
I disagree and I think you are dumb. A coin that has 18 billion + will just have holders holding millions of coins. A coin with millions of coins will have holders holding thousands of coins. There is zero difference and to pretend that having more total coins makes a currency more or less valuable is borderline retarded.
I agree with this gentlemen.
What is the difference between 100 billion, 1 billion, 100 million, etc.

With bitcoin we still deal with Satoshi's, fractions of a coin, which make pricing a bit more confusing when it fractions out so far. When making a new currency, why not just move the decimal further down and make each coin less? What the hell is the difference? It makes it far easier to buy/sell/trade with, and doesn't turn away newbies.
It makes a huge difference. I explain here:
"Inflation was so bad in Germany that money became worthless. Here a child is using money as a toy. Money was used as wallpaper, to make kites. Towards the end of 1923, so much money was needed, people had to carry it about in wheel barrows.
That will be the fate of Mint...