I think a lot of posters have missed that the Taxpayer does not, in fact, pay for T2 or any of the capital requirements of the DAA, which is a semi-state body. the losses are underwritten and the DAA would benefit from its debt being underwritten by the Irish government, but does not benefit from direct funding from the taxpayers purse.
Another point missed is that T2 was planned and constructed in a time when Aer Lingus, Ryanair and other airlines were adding aircraft to their fleet and new destinations from DUB on a regular basis. T1 was derided as "third world" and "over crowded". Remember the pre-fab barding areas? T2 was very much needed.
Come on guys, you can't have it both ways?