There are certain conditions (which relate to the type of product) though. We have a seperate page dedicated to this topic, which you can find here
We require your date of birth only to confirm you are old enough to legally purchase alcohol.
This is a necessity in the sale of alcohol, in the same way you may be requested to prove your age in a liquor store.
We do not make use of this information for anything else, nor will we ever share this with anyone, or any other company.