[adrianmonk]

IDs are used for many things other than driving, like:

(1) buying alcohol / entering bars

(2) flying

(3) voting (in certain states)

(4) a doctor's appointment

(5) picking up a prescription

(6) withdrawing cash at a bank

(7) touring an apartment you might lease (for the leasing agents' safety)

(8) returning items at a store if you don't have a receipt (as an anti-fraud measure)

[patch_cable]

Yes. Those are all excellent reasons to have an ID.

[tekknik]

And reasons one might be required to already have one, since those are all common things.