Edit: imo alot of people don't like the idea of billions and billions of coins
I believe this is more a matter of distribution. More coins means more potential for widespread adoption. I mean, if there are 100 000 people on the altcoin scene, that's the maximum. Compare with 7 billions (soon 9) inhabitant on this planet.
You can easily move the decimal like we do with bitcoin. The mathematics of starting an economic engine is more important than the brain crack idea that it will be used by literally everyone on the planet.