Hacking into websites and exposing people's private lives is bad. But screw Ashley Madison for commercialising extra-marital affairs and making money out of facilitating lying and deceit and breech of trust in relationships. Possibly the most immoral website ever so the business itself deserves to go bankrupt and die.
What individuals do in their own lives is their business, but a website that exploits the worst aspects of a person's character (being deceitful and betraying the trust of someone who is meant to be someone they love) is totally disgusting.
“The fundamental cause of the trouble is that in the modern world the stupid are cocksure while the intelligent are full of doubt.” - Bertrand Russell
"When the power of love overcomes the love of power, the world will know peace."
Jimi Hendrix