Another factor in this case that can affect your decision making is how you manage your remaining engine. Driftdown rules call for max cont thrust to make the slope flat, but is that really a good idea to push your remaining one quite hard when its the only one you've got left?
Apart from that, I quite agree with the fact that, if the source of the failure can be determined precisely enough to make sure that it doesn't endanger the aircraft (like a fire or severe damage), then why not go to the destination if so close? And here, Dublin is the homebase, so, how could there be a better place to put in the aircraft? Only bear in mind that its handling will somewhat be crappier..., but like someone said here, a single engine aircraft should not fly in a permanent distress situation!
BTW, anyone knows if a restart was attempted?