Another thing to take into account on this subject is how much time and energy is spent on mindful awareness of total experience- including lucid dreaming, psychedelic experience, and other non-ordinary states of consciousness that many people ignore or downplay.

A 20 year old that has been conscious of his/her lucid dreams every night can have many years of experience over a 40 year old that spends their sleeping hours unconscious/non-lucid every night. Plus, it should be considered that time can be experienced differently during lucid dreaming and psychedelic states of consciousness. Lifetimes can be lived. Bursts of awareness and wisdom are common while lucid/tripping. Conscious experience is not always linear. Theoretically, many lifetimes can be accumulated in a standard 80-90 years!

Reality is perception. And perception can take many forms.