knit-in

Here's what you can also do, other than flying private:

When you board a flight and see a child in the vicinity-- of the age that you feel might be disruptive to your experience-- find a FA or a GA and ask them to re-accommodate you on a later flight. See, that way you can ban yourself from flights with children. Certainly the more proactive thing to do till the airlines realize you are right about discriminating against Passengers of Young Age (POYA).