Considering the rate at which the general aviation fleet turns over (~none in ~forever), and that the typical Cessna is flying around with a World War 2 engine or its closely related descendant, I predict that it will be roughly infinity years before people who live at the ends of airports stop cursing the noises.
Of course, if they just outlaw 100LL avgas and pass some noise regulations the problem will solve itself.
Of course, if they just outlaw 100LL avgas and pass some noise regulations the problem will solve itself.