In many US urban areas, they haul them away by the dumpster full weekly. So sad.
The last time I lived rural, I had a neighbor with 3 cats that got pregnant every spring. One day, I said "ever thought about getting them spayed?".
"Aww, people come take some, the road [next to the house] takes the rest."
I was floored. If I had it to do all over again, I'd capture his cats when he was on vacation and have them spayed myself.
That was 15 years ago. My current (and only) cat was one of the assholes litter. Here's the fearsome lioness herself: