There is no overpopulation of pets. Read the thread.

There is plenty of room for all the animals in this city that are killed at the shelter each year.

There is a lack of people like you who are willing to rescue and adopt animals and not enough PR effort by the city animal control shelter to convince non-pet owners that owning animals is beneficial to your health and pet owners that owning more than one pet is beneficial for both you and your current pet.

Again - please stop complaining so much about the poor behavior of some pet owners. It may be highly visible and unnerving, but it just isn't the root of the problem.