I like my guns and enjoy very lax regulations here,
Country mouse and city mouse have different problems, which are solved with different solutions. As well, in some cases what people do in their yard has significant effects on what happens in other people's yards. You may not have to sort your trash, but it's still illegal for you to burn plastic. You don't get a tailpipe test because you don't have enough tailpipes to matter much, but you still have to deal with basic federal emissions regulations (it's still illegal for you to remove original emissions equipment, for example, and there are various mechanisms by which you might get caught and fined) because if a large enough percentage of your population cheated badly enough at emissions, it would make a difference.
I find it a very good thing that different states can mostly self regulate and have the laws their citizens enjoy, rather than a one size fits all federal mandate on fucking everything.
But there is a federal mandate on fucking everything. For the most part, states simply place additional restrictions, because they don't feel that the federal guidelines go far enough. Every state has its own version of this, designed to suppress or oppress a different group.