You really don't want to see the dire impact on my pension already 
Bare shelves? Unlikely. Filling the car? Have already given up non-essential travel. Rolling blackouts? I'm a seventies kid, I remember those.
I'm not sure 'happy' is my yardstick here though - necessary, perhaps. I find myself in the unusual position of agreeing with Liz "no brains" Truss though, in that it is taking a hit now to prevent a larger hit later.
What about when Russian controls both food production and it's export in Ukraine as well? What about when it invades Moldova, Romania, etc? What about when it takes control of the seas in that area? How 'expensive' will all that be?