SHIELD I lived through his "helping". I saw what it did to Skye. His obsession with her probably would have gotten her killed.
If we're all fictional characters, I vote we blame it on Stark. It just feels like the right thing to do. The first two... it scares me. I automatically want it to be us dimension-hopping. Hell, I'd take purgatory. And if this is the Matrix, where the hell is Keanu Reeves.