So I'm a big disappointment.
Reading on in ch 24 Jesus calls his disciples 'O fools and slow of heart'... That would be some type of declaration of disappointment. Surely we disappoint God too.
The thing that stands out today is that, after the resurrection, Jesus met one-on-one with Peter before he appeared to the rest of the apostles(v. 34, I Co 5:5).
Somewhere near the top of the agenda, after the big denial and disappointment... Jesus restored the broken Peter. I stumble. I fall into sin. I disobey. God's love for me doesn't depend upon my performance.
I love that about God.