Tite Kubo talks about Aizen's reason for everything.

[Koby]

Within the released Espada UnMASKED novel Tite Kubo mentioned Aizen and his reasons for doing everything he had done.

Aizen was stronger than anybody else, and because of this, he was lonely and misunderstood by everyone. The loneliness that came with this strong isolation was very deep, and very sad.

Aizen's Goal:

Aizen wanted to become the Spirit King and create a brand new world. He wanted to become a divine "messenger" and make those under His domain become aware of His presence.

If you think about it though Tite's excuse fails because he makes it sound like Aizen was a nice guy only misunderstood and needed someone who could stand on even ground with him. That's nothing like the Aizen we saw for near 300 episodes. Aizen manipulated Momo, had Hitsugaya nearly kill her, etc. :/ So obviously Tite Kubo didn't even understand the very character he created. Either that or he made some major holes in Aizens character just like he has done over and over with the plot.

[SoheNExus]

Aizen...was...lonely...WHAT!? He was going to kill thousands of people, preformed inhuman expiriemnts and manipulated events for over a century because he was lonely!

I barely accept that having a "god" character is at all decently workable...BUT giving a decent motivation is a must for any character.

Rage over.

To atleast contribute more then a rage and a rant to this, I will give three motivations that I believe would fit better given what we've seen of Aizen.(...lonely!?)

-Wanted more power, cliche but works.

-Sadistic, believable and fits with what we've of his character

-Bored and too much power, still believable if a little unrealistic but it would've worked.

Edit: I thought of another reason, straight up show-bouting. He can, and therefor he does.

[vendeleska]

There was no way he could think like this cause he was like naturally arrogant, like he might not even intend to make an arrogant comment but it would still sound arrogant. Even when he was losing to Ichigo he remained arrogant to the bitter end, so at what point was he ready to accept this loneliness if not when he was about to get his ass whooped?

[Gedo Mazo]

Well if Aizen was so lonely,,why he didn't make friends with Ichigo after all Ichigo probably stand at the same level as his. Anyway. I don't want to put too much thought on what Aizen wants or what he wanted to become..

[atreyuavenged]

Aizen was strong, but not Head Captain level strong. What made him strong was his Zanpakuto's (sp?) ability.

Lofty goals, but I also feel that was a lame reasoning for the character.

[spiritryu]

Yeah I didn't like that explanation, despite being cliche I liked Aizen better when all he had was a god comlpex.

[macdeknife]

I've always wondered what his real motivation was. I don't buy the whole lonely bit. In a way, him being the strongest does kind of remind me of Kenpachi.

[emiliotheplayer]

thanks for the info. i was curious about this.

[eramz3]

Yeah. I didn't take to the "he was lonely" explaination.

[junkbonds]

Yeah. I didn't take to the "he was lonely" explaination.

Despite having a megalomaniacal god complex, Aizen still had part human feelings in him that were at odds with this. This is what Ichigo sensed as he fought Aizen in the end.

Human brains have multiple groups of competing brain cells that often think of opposite things and opposite solutions. This is why we can be very conflicted when making decisions.