That point in time was when the number of new things in life diminished to sporadic events. New things stand out and feel longer, repetition and same ol blurs and becomes irrelevant to memory and thusly disappears making time seem to “fly by”
If you do a ton of new things you’ve never experienced there’s still the possibility of having an “endless summer” such as the ones people often fondly recall from their youth.
The problem often is that when young, basically everything is new, getting a bike and being able go visit a gas station is a new thing, but as an adult, visiting a gas station, even if a new one, has enough same ol to become irrelevant’d by the brain.
Can confirm, I’m an idiot and I have a couple machines running various distros.