Diversity of food, ideas, movies, music, video games, and so on are great.
Too much diversity of people, religions, morals, languages, and so on is not good. There is a reason why America started out as nothing but became a world super power in record time and one of those most prosperous countries in the world for a hundred years when the majority of Americans were not very diverse, then our decline started when we started forcing diversity.
So what's more important than diversity? I can name a few. American pride, morals, values and standards.
But really, a maggot is more important than diversity in today's America because at least the maggot serves a purpose.