Taking blame? How many centralized bodies have actually take the blame for every mistake. I would rather have myself take responsibility when I lose my coins than been giving excuses by some body. Nothing could be 100% perfect but with decentralization I can rely on many nodes to take charge rather than a single body restricting me when I wish to have access to my funds.
Decentralisation surely have its little cons but certainly its pros are greater than its cons. And with the everyday evolution of technology I only see it getting better.
the only thing decentralise does better is freedom but that freedom is also a huge weak point.
I would certainly like to know more from you why you wouldn't prefer freedom and why you think restriction does not poses more threat