That I'm not awake and doing something productive.

I'm one of the lucky ones, I only need around 4 hours of sleep to feel great. I've been that way since I was a kid. I regret that I sleep that much, I can push it down to 2 or 3 hours for a week or so, but it usually catches up and I will sleep for 7 or 8 hours. Then feel horrible for sleeping that much.

Most of the extra time I either work or educate myself with that extra time. I enjoy my work so pu1lling 10 to 16 hours in a day doing stuff you love is awesome.

Think of it this way, I'm 42, if the average 42 year old sleeps 8 hours a day they have been asleep for 14 years...... If I only sleep 4 hours, I have 7 more years of life experiences and time for learning..... Which is an advantage, and I will take all the advantages I can get.