I think also the 40k rules are much simpler, shooting for instance doesn't have a list of modifiers, or assault doesn't have a list of thing to add on (e.g banner, whether you charged and where etc.) and then there is the fact a lot of people that get into the game are kids, and when they are asked 'do you like giant genetically modified superhumans with guns that fire giant exploding bullets, or a really tall person with point ears' they gnerally go for space marines.
I think fantasy is longer too, I mean there is a whole phase dedicated to magic and also movement takes ages when you have to figure out when you turn and how far, and also you decide to charge before the assault phase, so it is harder to make it up as you go along
Me: To be honest im amazed there isn't a chaos god of not revising or at least chaos god of procrastination
MidnightSun: There will be, when enough people do it. Y'know when the Eldar were all engaging in their hedonism and Slaanesh ripped open the Eye of Terror with his creation? Slaanesh will have NOTHING on the God of Procrastination, and his vile minions will carve the galaxy asunder in a thousand year reign of blood.... Tomorrow