It's accessible.
Marketing 101 would say that accessibility is better than credibility.
Good point. With 10 billion of them out there it makes people feel good to say: "Hey bro, I have 1 million Doge."
Precisely. What does the average person want to see in their account? .000457 coins or 10,000 coins.
Think of the mainstream uses especially online gaming. What would the user want to see?
This is why I believe that those who keep espousing the notion that Dogecoin's abundance of coins is a negative. To the contrary, I believe that it's actually a great idea to have 100 billion coins; every person on Earth could have a few coins instead of a decimal point followed by numbers.