That's a pretty tough question, but I would have to say Darkseid. He's never really defeated him only had stalemates. Batman convinced Darkseid to let Kara Zor-El go, but got nearly beat to death doing so. Then there was the time he shot Darkseid with the cosmic bullet only to be shot through the temple with Omega beams. He's never really outright defeated him.
If you don't agree with the anti-homosexuality view being imposed on other people, you should see why the other side doesn't want the pro-homosexual view imposed on people, and when it's taking up valuable pages of X-Men, it's being imposed.
Valuable pages of X-men...LOL
It's a $3.99 comic book telling a story about a gay couple's marriage. Besides having it printed is not imposing. Forcing you to buy this would be imposing, and last time I checked we are not forced to buy comics.
I suspect that I will eventually stop. I have a bad habit of going out to the store and buying up massive quantities of comics then not read them. Then they sit on my desk and I never read them. I have about four 1 foot tall stacks of comics sitting on my desk. There is stuff in those piles from months ago. The fact that I'm not reading them is leading me to believe that I'm loosing my interest with comics. I don't want to stop just yet, but I know the day is coming when I will either get bored with collecting comics or I have larger responsibilities in my life that take precedent.