Behaviour Trees.. Why?

Firstly, I’m just dabbling, and I apologize if this is overly simplified question, but why are behavior trees, or more specifically the whole BT interface necessary…

I have a BP for my AI, AI Pawn, and even for the BTT-nodes, why do I need the whole BT thing in order to get my AI BP to talk to the BTT Blueprints?! Why can’t I do it all in BP, and have the selector/sequence/parallel nodes in BP too? Instinctively, I want to set the BT nodes up in the AI BP event graph - is this possible?

I’m actually curious about this too.

I’ve followed a tutorial to make a simple hunter AI… but I find it quite complicated for the relatively simple task I try to do.

I can’t wait for the documentation and official tutorials from Epic.