ORK is the airport I most commonly use and it does have the vibe of a large bus terminal but because it was built with *potential* in mind (and is thus oversized for its actual use) it is also a very peaceful airport that is a long way removed from the hectic environment you get at LHR or even DUB. I like using it because it's the closest airport and I typically connect in LHR or AMS anyway so if I connect there from ORK or DUB doesn't really matter.

I can add two things: In spite of it being typically quiet, it's possible to have a bit of a wait at security as the security checkpoint is small so if you have two flights departing at around the same time and they're both full there can be a bit of a logjam. I'm talking about maybe 20 minutes wait though so not too dramatic.

Secondly, one thing to note about ORK is that it's located in a hilly landscape a few miles south of the city. It's fair to call the area "windswept" and go-arounds and weather-related issues cannot be ruled out at any time of the year - though snow and ice fortunately are typically not really an issue.