115 Votes in Poll
From what we've seen in the show, bending is genetic. Every bender we see seems to have at least one bender parent. But could Aang, the Avatar, have a child who was an earthbender or firebender? If he and Katara could only have children based on their ethnic background, then no. But could it be possible that Aang passes earthbending or firebending to one of his children, even though he was born an airbender?