The Irish back crumbling Eurozone

Voters in the Republic of Ireland have backed the crumbling Eurozone, with roughly 60% of voters supporting the referendum on the fiscal pact, with a low turn out of 50%. The result is rather bizarre. With Greece seemingly about to leave the Eurozone and Spain on the brink, why would voters embrace the EU even more?
Sadly, the main opponent of the measure was terrorist Sinn Fein leader, Gerry Adams.