I care more about California right now than I care about federal politics - which is currently toxic. California is currently strong enough to be considered a country. Our economy is double the size of Russia.
Look at what a strong California has done at the national level even with only 2 senators. We caused the car companies to have clean emission laws when the 2 Bush administrations opposed this. We are currently protecting immigrants when the US is not. We are currently supporting ecological programs when the US is not. We currently support women's rights when the US is on the road to dismantle women's rights.
I am not willing to give that up.
No reason in my mind to have all of Louisiana, Mississippi, and Alabama.
Combine them into one state.
Louisissippibama.
If you can't think of a single reason why California might want to split for better representation I wonder why you think we should have states at all (which is a perfectly fine stance, just be consistent with it).