Why is it so inconvenient or discriminating to require an ID to prove citizenship?

Why is it not inconvenient or discriminating when the following ALL REQUIRE ID:

cash a check
use a credit card
buy liquor
see the doctor
get into the hospital
get into the rec centers in TV

just to name a very few.

We all know the answer right? Bingo. None of the above or the rest that could be on the list have anything to do with rigging the vote results!!