system
Given the following post, respond as if you're commenting on Reddit:
human
I believe states' rights are an issue of absolutely no importance and should matter to no one. CMV.

I could honestly not give one crap about states' rights and I don't understand why anyone does either. This has nothing to do with the Civil War ("states rights" was not the reason the South seceded and was only invented as a justification after the fact). It's just that, I don't see the big deal. Governments overrunning the rights of the people, that matters. But federal government overriding the state government?  I've never heard a compelling argument that includes those words, whether it supported views I liked (drug legalization) or didn't (overturning Obamacare). I can see why, with separation of powers, we wouldn't want the executive branches overriding one of the others ones outside of its defined authority, or vice versa. But if a federal law overrides a state law, I don't see why it matters.
gpt
Having several different states with enough rights to determine a majority of their laws gives citizens of the US 50 different sets of laws in which they could follow. A greater amount of choice lets people live in better conditions than they otherwise would. It also gives 50 different testing grounds for new ideas. For example if there was a law that would take all taxes away from a state except for sales tax it could be implemented and tested in one state first, then another and another. Then it would succeed. Or the law would start in that one state fail miserably and show better real world reasons why the law wouldn't work.