I have no plans or desires to leave the country.

In my wallet, I carry 3 Federal types of ID: Military (picture w/health record encoded), TWIC (picture w/security data in RFID chip), SS, and my TRICARE cards;
2 State types of ID: Driver's License (picture w/encoded info), fishing license;
1 local type of ID: Library card;
6 miscellaneous types of ID: Employee's (picture), health history (microfiche), insurance, CPOA membership, minature HS diploma, Sam's Club Membership Club (picture).
Credit cards

I think that is overkill to the max as to proving who I am. I think I'll forego a passport for now.