georgec said:

So Han and Leia waited 20 years to screw and have kids?

I know it's the only way the story can go, it's just too late, that's all. Han will be dead before those kids reach puberty.

I seriously doubt they would have waited that long. In a universe with 200 year old Wookiees and 900 year old Jedi masters, the age of our human heroes really isn't that much in context. It's long been a convention of SF that any technologically advanced society has solved many of the problems of aging.