User blog comment:GinIchimaru/414 : Gin Rebels/@comment-1774413-20100730012645

thats sounds like a good theory. Personally mines is much more orientated around Gin simply being a Sociopath. He never killed Aizen previously as he didnt know how to conteract his hypnosis, but once he found out he began formulating his plan from then. For me the reason why Gin never attacked Aizen is simply as he himself states, he enjoyed knowing that no-one could kill Aizen but him. Perhaps he finally chose to Act because of the threat to Rangiku or perhaps simply now that Aizen had beaten everyone in the Gotei 13 Gin felt now was the time to proove he was the only one who could kill Aizen. Personally im going back to read over what he said to Ichigo during his fight, as i have a feeling there will be a subtext now... perhaps Gin knows that he wont be able to kill Aizens hogyoku form homself and so he let ichigo live in hopes that he may get stronger- though this is complete crack theory there lol.