Dear ERDOC,
I started a thread on a subject very similar to yours a few days ago. Finally it happened that I 'joined' a new Sam's Club where the membership card has a photo. I am using this as my second ID where demanded. I don't carry my passport domestically as I agree with you about the need to cut down on the risk of loss.
I hate having my DL used as a form of ID. This is all getting too close to a national identity card.
How many of us are old enough to remember when a Social Security card said 'not to be used as a form of identifcation'?
I'm getting tense!