What is the communities incentive to posts leaks?

I wanna make this very clear, I'm not attempting to vilify the community with this question. Just curious, what are peoples motives for leaking addons / server files? Especially those who don't put back doors into the scripts, why release them for free? Cause quite honestly, I understand when someone puts backdoors into an addon and then releases it in an attempt to get server files / addons. But what drives the people that leak addons that have no strings attached, what is your reasons forleaking addons?