The HOA was our only way of ensuring bad owners didn't abuse their ownership rights. It was an old building, so all the water was shared on the water bill and the HOA let us split this up based on square footage. Units which had excessive numbers of people living there also liked not to pay HOA dues of any sort (doubling the water bill problem for other units).
At one point a unit was running a brothel! This was wild to find out about, because it wasn't in a bad neighborhood or anything - it was the historic district.
HOA's have their uses, but also like any positions with power, they attract people who want to give meaning to their own insignificant existence by lording it over the less powerful (insignificant in the sense that most of our lives are insignificant).