The Irish have had a bloody tough lot, a long road to ho and little gratitude from outsiders, not that they really needed it-:)
Don't cast espursions on them, as they are a nation sustained by their Catholic faith (much like the Poles) and who had been defined in terms of their poverty longer than not.
Rude?? Well, look at their harsh climate and bare resources and you'll soon realize that geography, not only culture, shapes national character too!!!