I care! Once my party is over, I use the leftovers to feed my family the rest of the week! lol My hospitality only goes so far - when the party is over, get out of my house and don't take anything with you!
We have family that will literally clean you out of house and home if you opened up your fridge and pantry to them carte blanche
So there you go....now you know someone who doesn't like people to pack up all of her leftovers "to go" without asking. And I reciprocate by not doing that to anyone else.
And I am kidding a little...while what I said above is true, I wouldn't be rude to someone who took something home with them...I would smile through and say of course! Take what you want!
I do pack up a bunch of stuff and send it with college-aged DS18 when he comes for a visit. But that's different...he's a poor college student, and my baby lol
YMMV.