That anti anon who said Dany saying she can't have any children & therefore jonerys won't last is adorable. And they've clearly never been introduced to the literary concept known as the Chekhov's gun. You don't kill one of Dany's dragons, have her specifically tell Jon that she thinks she can't have any kids other than them before they make love, and NOT have her get pregnant. Personally, I always thought Dany would have 3 kids - 1 for each dragon that is going to die by the end.
When the ask itself is so good I have nothing to add.
Bravo, anon. I agree. (Still not sure on number of kids but that would make sense =] )