Is there a compelling reason why the the US of A needs to persist?

I’ve been thinking lately that this country is so divided that the USA should disband and we all become separate states.

Or maybe some states want to team up. The West coast could be New California. The Southern states could band together and shoot each other.

What do you think? I know my details are playful, but I ask this in all honesty. Do we need the USA any longer? Is there any cogent argument to convince me that the USA needs to exist?