This business of carrying adequate ID as specified by your State's laws is not a trifling matter. Certainly a person can go for years and not need to positively identify themselves. But, when that time comes everyone should understand that the police officer or other government or first responder not only needs to know with whom they are dealing, they have the legal right to demand positive ID. From personal experience I know people lie about the darndest things, including their identity, even when it isn't in their best interests to lie. After awhile some officials just assume most everyone is lying, sad, but that is the case.

On the other hand, personally, I think it is poor practice to use your drivers license as an ID document when riding a bike. It makes it too easy to get mired in erroneous actions against the license. Also, I'm aware of too many cases where after an incident or other contact the license was taken until the paperwork was complete and then the officer went off duty, or in one case on vacation, and you are stuck with no license with which to drive, rent a car, or any other of the many things a license is needed for.

My State issues both a Drivers License and, upon request, an ID card. There is a nominal charge for the youngsters and it is free for us elders. Use the ID card and leave the Drivers License at home. If your state doesn't issue both, I think some states even prohibit having both, then you need to get the law changed. In the meantime, check with the locals to see what works; concealed carry permint, passport, passport card, government building access pass, etc.