Why people stop playing Warlight after 3 games?
Why people stop watching GOT after 3 episodes?
Why people stop reading "Dune" after 1 book?
Why people stop eating new kind of pizza in pizzeria after trying it once?
I think it really just boils down to not liking it. Boring simple-player, hard opponents, not-super-perfect tutorial, aren't real problems IMO. Although
When I started I wished that there were auto-generated open games with only level 10 and under; kind of a "kiddie pool", if you will. I think this is especially true for folks who are coming to this on their own and not playing with friends.
This is good idea.