Should it be mandatory for all pets to receive a daily dose of cuddles and treats ?

YES!!! I've noticed that even my ordinarily unaffectionate cat will start getting fussy if I don't have cuddle and nurse-on-my-lap and petting and stroking time with him. This cat won't allow me to pick him up, won't sit on my lap, except for the rare front paws-on-my-lap-only sitting, and he never cuddles. But without the affection that he allows, and is comfortable with, there is a LOT of fussy meowing!