We have "emploment at will" in Texas and it works well here. You can thank the unions if you don't like working in an "at will" state.
I was "downsized" along with 4 others that helped a guy build his company into a $million dollar a year company. Each of us had 13 years invested. We got a severance package and un-employment benefits along with COBRA.
It sucked to be us, but all 5 of us rebuilt our lives elsewhere. I even went to work for his competitor as a paid "consultant" for a while. Really chapped his ass, but employment at will cuts both ways.