No... To start over entirely would mean wiping all existence out. It's just going to cause more pain for everyone, yet they still wish for it.

I needed to warn you because this world may be wiped out while we're still here. I've done my best to prevent that from happening, but...

You don't need to worry, though. I've already talked to Ichigo, and I won't be with you all much longer. You can go on to the next world without me.

[It's... a little cryptic, but he couldn't flat-out say he's going to be killed to someone so young.]