8. Everything Is Spider-Man’s Fault
Not all of Peter Parker’s attributes are good ones. His New Avengers teammate Luck Cage noted that Peter has an overdeveloped sense of responsibility and guilt. Spider-Man will assume the blame for things that are not his fault because they have some tangential connection to him. This undoubtedly was connected to the time that he did not stop the burglar that ultimately killed his Uncle Ben.
When Electro caused the mass breakout of the Raft Maximum Security Prison in the "Jailbreak" arc of New Avengers, Spider-Man blamed himself because Electro was “one of his”, meaning that Dillon was one of his regular foes and thus, his responsibility. The breakout caused the formation of the latest team of Avengers with Spider-Man as a member. Peter never trusted Norman Osborn when he took over the country’s peace-keeping agency S.H.I.E.L.D. and turned it into H.A.M.M.E.R. and created his own team of Avengers, secretly disguised villains in the "Dark Avengers" arc. When Osborn showed his true colors and attacked Asgard, Spidey blamed himself again in the "Siege" story arc that ran through the Avengers titles.
Peter hated the symbiotes Venom and Carnage, and especially all the damage they caused, because he was the one that originally brought the symbiote to Earth from Battleworld during "Secret Wars". Spider-Man had a particularly difficult time reconciling the deaths of others, even though he has seen more than his share. The deaths of girlfriend Gwen Stacy and former tormentor-turned-friend Flash Thompson particularly haunt him.