Biology is fundamentally based on evolution, so when viewed through a biological lens, a classification based on evolution is appropriate.

We know of course that taxonomy is only one way to group organisms. People use plenty of others, including ones more beneficial to the human experience.

We group plants by the hardiness zones they can tolerate, for example. If you go to a plant shop they'll likely have plants which thrive best in sun outside, while others which need shade are inside or covered.

A zoo might group animals by where they are found, with zebras, ostriches, elephants, and giraffes together in the savanna section, rather than place all of the mammals together and the birds elsewhere.

As others already mentioned, "fruits" and "vegetables" are culinary definitions, not biological ones. Far more people use the culinary term "vegetable" to describe a tomato than the botanical term "fruit".

We also have religious classifications, like the Biblical prohibition: "“Nevertheless, these ye shall not eat of them that chew the cud, or of them that divide the cloven hoof: as the camel, and the hare, and the coney: for they chew the cud, but divide not the hoof; therefore they are unclean unto you.”