1.) one crazy mother is probably not the reason why there are so few readers (even if it's true that the number of readers is indeed small) and there is very little chance that this represents a significant sample
2.) higher number of readers is not automatically better, you need other factors than just the number alone
3.) many more people have worse positions on far more important issues with much much worse and serious results
4.) different people value different things. If this mother's opinion about books appalls you so much I wonder what your reaction would be if you read about other people's opinions about politics, religion, art, beauty, social order, economics, foreign affairs etc