BECAUSE WHY LET A PERFECTLY GOOD LABEL GO TO WASTE?

     After watching the most recent episode of Avatar: The Legend of Korra, I had a thought. At one point, the former chief of police reminded Councilman Tenzin that protecting his family from Amon, who can take a bender's abilities away from them, was absolutely imperative since he and his children were the last of the Air Benders. I wondered why this was so. After all Aang, the previous Avatar, was born an Air Bender and carried that, uh...let's call it the airbending gene within him as several of his family have the airbending ability that, for a time, Aang was the last possessor of. Aang lived for like seventy years after the end of the events in the original series. He obviously had children, but why not a fuckload of children? And I'm not talking with just Katara.

     Now I know such a subject isn't appropriate to bring up openly in a children's show, but that doesn't mean it could not have happened nor does it mean that it could not be told to the audience subtly that Aang had LOTS of children in an effort to reestablish the airbending nomads who were killed off genocidally by the Fire Benders a hundred years prior to the events of the original series. One would think that no matter how much he may have loved Katara, this drive to restore the airbending population would be an imperative of his. Why didn't Aang impregnate as many women as possible in life in order to do this? Like I said, it could've been implied that this had been done and handwaved to the audience since this new show takes place so many years later. The suspicion could've been borne out by making sure there would be at least one Aang-ish looking person in the background people in large crowd scenes every week.

     Something like that would have amused me...

ADDENDUM:  Okay, now I really have to wonder why Aang didn't go all impregnating happy. I was looking at the TVtropes link, and a posted picture showed Aang and Katara's three children: Kya, a waterbender; Bumi, a non-bender; and Tenzin, an airbender. Now remember, Aang is the LAST natural born airbender on Avatar Earth. One would think, especially if it took three tries to get the world up to two airbenders, that Aang might have a personal interest in increasing the population of Air Nomads by fucking around...y'know, for the cause. I'm sure Katara would understand.
     And okay, I know they can't explain that openly in a kids' show, but it could still be implied. Tenzin got lucky and three, possibly all four, of his kids are airbenders meaning Tenzin has done more for the Air Nomads than Aang has. But still, there are only four (maybe five) of them on the ENTIRE PLANET.
     Now, since the job of the Avatar is to bring balance to the world, I am going to say (and add to my predictions for the show) Avatar: The Legend of Korra will get around this detail by figuring out not only how to soulbend to take away one's bending ability, but also its opposite and learn how to restore bending in people or even give bending to nonbenders. Korra will repopulate the world of Air Nomads through soulbending.