Let me tell you, they definitely have feelings.
Some cats are overjoyed to see me, they even come running down the road, purring and chirping at me. It's not because of the food because many of them don't even eat it right when I put it down, they must eat later in the day. They are just genuinely happy to get some attention, to "talk" to you and to be talked to.
What people should be asking is if all those chickens, cows and bulls that are slaughtered every year had feelings and if it is right to raise them only to kill them.
(and yes I know the irony is the cat food is made of chickens, cows, etc. - I don't know how to resolve that conflict)