Except for gross misconduct, COBRA.

Yes, you will need to pay for the coverage that the employer was paying for, but that's not "eliminate your healthcare coverage at the drop of a hat with no remorse".

Also don’t forget you can delay paying for COBRA for up to 59 days after loss of employment and still be able to retroactively pay and be covered. It’s a gamble that you get to go back on if you cards break the wrong way