for sure , apples was probably a bad example since u can buy them individually !! but there are just certain items that it seems impossible for.. like crumpets for example.. there's just no way of buying a single crumpetbeing able to plan out a few different meals for the week using mostly the same ingredients helps me a lot! so if I need to buy a whole english cucumber, I'll have a few things cucumber could go in or with! also most produce you can get individually, and its also really cheap when bought in one person quantities.

sry I know it's peak petty hahah