In many ways, they are gone for me. I still love a good ride, and even most bad ones. But I sadly will neer recapture those days before there was such things as training, cadence, form, fitness, clips, clip less, so on. Even the teenage days of where ya riding today? I don know, see how I feel on the road.
However, the good side is being able to ride worry free, I know I can handle whatever a ride throws at me. But I miss the feeling of the adventure.
PS Denver - In my case its internal not external.