I'm not sure what to say but I feel compelled to do so anyway. Anyone who has ever heard of Ryanair is aware that they are a LCC and naturally you get what you pay for, if I need special consideration, this is the last airline I would choose.

I would also take away a lesson from this experience; never go to an airport without your passport, even if its domestic travel. You never know when it might come in handy. The excerpt below is taken from Ryanair.com under the travel questions tab for passports and visas.

Passports & Visas
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Do I need a passport? < BACK

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It is the passenger's personal responsibility to ensure that they have valid documentation which meets the requirements of Ryanair, immigration and other governmental authorities at every destination.Any fines, penalties, payments or expenditures incurred as a result of breach of this requirement shall be paid by or charged to you. In order to ensure compliance Ryanair recommends that you carry your valid passport (and visa if applicable) on all journeys.




There's more there but this is the pertinent information.

As a first time poster I understand if you just wanted a place to rant and we'll never hear from you again and certainly not outside of this thread.

I would not use you disability as a factor in this event as it had nothing to do with their decision and would have happened regardless. That said I would call Ryanair and ask them what kind of identification you would need without referencing this incident and see if you get the same answer. Then go from there. If they tell you that you need a passport then I'd say live and learn. If they tell you your Drivers Lisence is just fine then I'd tell them about what just happened and ask for a supervisor to request compensation.