For a very long time, there was a feeling among a certain segment of hardcore comics fans. When Jean Grey was resurrected in the lead-up to the launch of the X-Factor comic book, it started a flood of character resurrections in Marvel (and DC for that matter). Heck, even Aunt May was revived! (Thus ruining a most powerful character death in Amazing Spider-Man #400.)
To many comics fans, though, there were two people who were likely to stay all dead, rather than be mostly dead: Spider-Man’s Uncle Ben and Captain America’s sidekick Bucky Barnes. Those two deaths were too important, too formative to ever be reversed.
And then in 2005, Ed Brubaker and Steve Epting did the “Winter Soldier” storyline in Captain America Volume 5 and blew that idea all to hell.