People who have put dogs to sleep prior to the dog being completely helpless, how did it feel after?

This one hits home. We knew it was time, and so did my sweet girl. After, besides the obvious soul crushing grief of essentially losing someone I grew up with, I knew she was finally pain free. Still gets me choked up but we all knew it was time, and I hold onto the faith and hope that I will see my sweet girl again in full health.