I just saw one article showing the distribution of churches around area, so I test it by myself using the google map.
Let's first check around the Boston area, where I'm now.
Cathedrals
Churches.
The number of Churches and Cathedral looks not very different.
Now, let's look at Seoul, South Korea.
Cathedrals.
Churches. WTF.
Now I can understand why we can see, after sunset, only the churches' freaking bright electronic crosses on the top of each church in the every places of Seoul.
Churches in Korea are not anymore sacred places for prayer and rest, it is just an another business model to delude people so that to legally blackmail them. I'm really sorry but it's the truth of the most of churches in Korea..
* All maps are roughly in the same scale.
P.S. Don't get me wrong. I really love to read bible and do appreciate what Jesus have done during his mortal life, just as much as I love Buddhism.