To be fair Soul society government is made up of a bunch of complete douches who deserve at least half the crap that happens to them.
If it wasn't for all the "evil" crap Aizen has been doing you'd mistake him for being a good guy.
His murder of the crazy 88 or whatever number they were wasn't even that bad morally when you look at thier behavior vs captain midget and Urahara at minimum. Mayuri was formerly in a jail that existed to hold peole who MIGHT go against their rules. Sure he's a complete monster but how much worse did he get from centuries locked up in a tiny room? It seemed like a fairly large jail at that. So on so forth the list is going to get longer and longer as time goes.
So tldr= tousen is afraid of becoming a giant douche and then dying as one?
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