Ireland also never had the traditional feudal structure of serf villages around a manor house that was common in the rest of Europe. There were towns based around either castles (even before the Normans) or abbeys, but not a huge number. Instead, people tended to live scattered around on their own land (owned or rented), in loose clusters not too far from their nearest neighbours, within a few miles of some focus that was basically a wide spot in the road with a smith, holy well, coach stop, fair, etc. plus the inevitable church/chapel.
There are echoes of this culture in the distributed housing you see today - it's still normal not to build in a village.
Villages - with concentrated houses and residents - only really came into their own during the 17th -18th century plantations in Ireland when the ascendency started building stately piles and often threw up a few cottages for the staff at the same time. Lots of villages and towns were planned at that time to service the local big landowner, usually building around a local church.
Many older churches were enclosed in plantation estates at this time and were effectively closed because the population couldn't access them, and have since disappeared. Other churches that didn't have a village built around them fell into disuse as people started going to the village church and have disappeared from the landscape.
You still see the occasional church out in its own in rural areas with no village around it. These are the remnants of the old system of churches serving distributed communities.
Finally, following gradual repeal of the penal laws in late 18th and early 19th centuries - plus the fading of the ascendency after the Irish Parliament was dissolved - the Catholic Church started investing more money in Ireland and building convents, schools, etc. all over the place. These actions were stepped up after the famine as the church sought to gain firmer control of a country it considered half pagan, with stronger beliefs in fairies and holy wells than in church dogma.
Most village and town churches were rebuilt in the 19th century as a result of this cultural indoctrination building programme, flattening the smaller chapels and building grander-looking replacements. Most churches in Ireland are relatively recent, but occupy a site that has probably held a church for hundreds of years.