Marvel has given Wolverine many opportunities to shine as a hero, but there are plenty of moments of Wolverine being a d*ck. He may be the best there is at what he does, but sometimes what he does best is act like a jerk. He's betrayed friends, eliminated family members, and has inflicted unforgivable cruelties. In his tenure as a mutant superhero, he's also done some truly weird stuff, even if it isn't exactly d*ckish.
Take a look at this list of the some of the worst things Wolverine has done and vote up the ones that really aren't heroic at all.