This is said, by the band, to be a reason for the venue selling pizza slices—they enjoyed Dublin night-life, but disliked the relative scarcity of places selling good pizza slices and so opened both a pizzeria attached to the existing Temple Bar venue Eamonn Doran's and the Voodoo Lounge.
The band asserts that the venue sells pizza slices as a reason for enjoying Dublin nightlife; they found few places offering good pizza slices, so they established both a pizzeria at their Temple Bar venue Eamonn Doran's and another establishment called the Voodoo Lounge.