It is dead handy so I don't have a problem with it either. Generally I travel hand baggage only anyway so I'm checked in online and just zip through the airport. However, when I'm taking baggage it tends to be with Aer Lingus (or at least starting with Aer Lingus) and I use their self service machines which are dead handy and simple to use, speeding up the whole process.
Only issue is to make sure the backup is in place. A couple of years ago I was going to Nairobi via London. The whole computer system crashed at Dublin the night before and the check in staff at the airport had to resort to manual checking in - clearly a very onerous process. We were OK, owing to the skill of the staff, but it could have been an absolute disaster. Essentially they managed to check our bags right the way through but still required us to present at the check in desk at Heathrow, which was a nightmare because our connection was short enough already without having to make it to the check in desk 50 mins before depature.
Anyway, enough waffle, the point is, if they don't have the backup in place so that you can revert to wholescale manual checkin in the event of an unforeseen event (such as a computer crash) they will cause a catastrophe which in the longrun does far more damage to the Irish tourism industry than Ryanair charging to use the loo.