I suspect that it is one tax that will be easily remembered each year. . In any event, if you do your own tax returns, then it's just an addon to all of the outgoings - like medical bills, mortgages etc. etc. So, probably not a major problem - just a fact of modern Irish life.
I would like to get a reminder as there are many other bills for sizeable amounts that need to be paid annually like car insurance, car tax, home insurance etc. As a PAYE person i never fill up a tax form but check i have the correct tax credits