It should be noted that drop ears are a man made creation.
They do not occur in the wild in ANY animal. This because the ear is supposed to AID hearing, not lay on the head blocking the ear canal. This also predisposes some long heavy drop eared breeds (Cocker Spaniels, Basset Hounds) to recurring ear problems. Manmade recurring ear problems.
So, in the pendant eared breeds that are traditionally cropped, it prevents ear infections by leaving the ear canal open so it can stay dry, and it aids hearing since the ear flap is not blocking the ear. In most breeds that traditionally have ears cropped, there was/is a working/historical reason for the ear cropping.
I say if you don't want a cropped dog, don't have one, and return the favor to those who might wish to own a crop eared dog.