When the Soviet-Afghan War started in 1979, the population of Afghanistan was 13.41 million. Current population is 38.93 million.[2] Afghans who were 14 or older when that war started make up less than 7% of the population.[1]
While I don't doubt that many Afghans would like a more stable country, I'm skeptical that a large portion of them have any real idea of what their country was once like. (Nor do I know how accurate and the Westernized portrayals I've seen really were.)
1 https://www.indexmundi.com/afghanistan/demographics_profile....
2 https://worldpopulationreview.com/countries/afghanistan-popu...