Together to the very end

This is one of the hardest parts of owning an animal, is to determine whether they are suffering and need to be put to sleep. Sometimes, there is not really any other choice, if they are dying anyway, and suffering.
The thing that I hate to see is the supposed humane shelters that pick up stray or wandering dogs, and then kill them, just because the owner doesn't ave the money to rescue the dog. The TV shows usually make a big thing out of the fact that they rescued the animals, and then at the end, they say that the animals were put down. So how is that rescuing ?
The shelters have continued to go up in price to adopt an animal, so that people can't afford to either adopt, or to rescue their own dog, and then the shelters will sooner kill the dog than let it be adopted for an affordable price.