How come states cant fully embrace statehood

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The people of the state would make the laws. Half the laws passed the last 20 years are unconstitutional. Gay marriage isnt in the constitution. Weed legalization isnt in the Constitution. Etc. If a state (the people of that state) want that then its their constitutional right to have it passed. The fed shouldnt enforce things and shouldnt operate with any morality.

Im just saying what i personally think it should be. Everything you think the fed should control can be controlled at the state level. The only reason i would keep the military at a fed level would be to deter secession, and civil conflicts, but if each state was allowed to operate fully how its citizens want it to there would be no reason to threaten seceding. Crazy conservatives would still fight for the rights of hippy liberals and vice versa because the fed oversees the entire military

But again this is all pointless i was just high and bored when i made this thread