[ColtaineDidNothingWrong]

Why didn’t the gods kill TCG way earlier? Seems leaving him alive had way more drawbacks than benefits (I mean, he threatens the life of Burn and is responsible for most major events in books 3,5 and 7). Was there a reason no one thought to just kill him immediately in one of the past chainings?

[D'rek]

The general explanation we get is that most of the various badass gods preferred to chain Kaminsod up and slowly drain him for more power. Killing him would (probably?) get rid of him and any repercussions immediately, but their greed for more power chose the riskier option. I guess it worked for the first few millenia.

[ColtaineDidNothingWrong]

Gotcha, did that even include gods like Rake?

[D'rek]

Possibly, but perhaps not. Even if Rake was there (or could have been there), he had a pretty "Andii stay neutral/defensive pact only" before Memories of Ice... and he's hardly in a position to denounce anybody else for chaining up and using others for their own ends, given Dragnipur and all. So even if he was there, he probably didn't say anything much against it.

[Abyss]

1. Pity - he was a victim of the ritual that yanked him down and didn't deserve to die for it;
2. Power - Many gods were drawing it from him;
3. Repercussions - he was bound to Burn, likely a bad idea in retrospect, no knowing how that might go wrong for the world or warrens;
4. Difficulty - it can be VERY hard to kill a god and he is harder than most to kill, and would require a lot of power and effort, leaving the killer weakened, which leads to...
5. Retaliation - if anyone decided to kill him, they would likely be opposed by whoever wanted to keep draining him; if weakened in the process, they might be attacked in revenge or simply because the opportunity was there;
6. Finality - dead is dead (sort of). Can't do much with him - good or bad - at that point.