I totally do not understand how anyone could say that any living being deserves less than another.
I really wish that people would put more thought into whether they can hang in for the long haul prior to obtaining a pet.
I personally would live in the woods in a tent rather than say I cannot find a place where my dogs could live. I also would do without a meal here and there to feed my dogs. As for medical expenses, again, I believe that thinking beforehand might eliminate the problem of finding that you cannot afford to care for a dog. All of the other things that people use as excuses are just that: excuses. Housebreaking an issue? Train your dog..or buy another mop. People don't complain about changing diapers on a baby, yet they complain profusely about a pup that does not know where to eliminate. Research, research, research prior to obtaining any animal and think about whether or not this is for you. Too many people just want to satisfy a whim and then the poor animals are the ones who suffer.
There definitely are catastrophic conditions that necessitate the rehoming of animals but they are rare. The surrendering of dogs is sadly not very rare.