Every time we use courts to enforce IP we're strengthening the Walt Disneys and Nintendos of the world.
(I accept I am in a group of like 3 people with this goal but it's my view)
Edit: to expand slightly more on this. People should be able to decompile/reverse engineer whatever the hell they want. They shouldn't have to worry about armed goons kicking down their doors. Every time cases are used to strengthen the enforcement of IP/licensing, whether for the light (FSF) or dark (Micro$oft, Google, etc) the outcome is the same, we move further from that goal.