I agree with your point but take a look at the following points:
National Sleep Foundation says:
The sleep requirements for each person depend on many factors, including age. For example, in general:
• Infants require about 16 hours a day.
• Teenagers need about nine hours on average.
• Most adults need seven to eight hours a night for the best amount of sleep, although some people may need as few as five hours or as many as 10 hours of sleep each day.
• Women in the first three months of pregnancy often need several more hours of sleep than usual.
SEE THE ATTACHED
However, experts say that if you feel drowsy during the day, even during boring activities, you haven't had enough sleep.
Sleep Debt
The amount of sleep a person needs also increases if he or she has been deprived of sleep in previous days. Getting too little sleep creates a "sleep debt," which is much like being overdrawn at a bank. Eventually, your body will demand that the debt be repaid. We don't seem to adapt to getting less sleep than we need. While we may get used to a sleep-depriving schedule, our judgment, reaction time, and other functions are still impaired.
Consequences of Too Little Sleep
Too little sleep may cause:
• Memory problems
• Depression
• A weakening of your immune system, increasing your chance of becoming sick
• Increase in perception of pain
The Risks of Sleep Deprivation
Many studies make it clear that sleep deprivation is dangerous. Sleep-deprived people who are tested using a driving simulator or by performing a hand-eye coordination task perform as badly as or worse than those who are intoxicated.
Sleep deprivation also magnifies alcohol's effects on the body, so a fatigued person who drinks will become much more impaired than someone who is well-rested.
Driver fatigue is responsible for an estimated 100,000 motor vehicle accidents and 1,500 deaths each year, according to the National Highway Traffic Safety Administration. Since drowsiness is the brain's last step before falling asleep, driving while drowsy can—and often does—lead to disaster. Caffeine and other stimulants cannot overcome the effects of severe sleep deprivation.
The National Sleep Foundation says that if you have trouble keeping your eyes focused, if you can't stop yawning, or if you can't remember driving the last few miles, you are probably too drowsy to drive safely.
For more info
How Much Sleep Do We Really Need? | National Sleep Foundation - Information on Sleep Health and Safety
For positive and negative problems regarding this topic:
Sleep Disorder
Sleep disorder - Wikipedia, the free encyclopedia.
Always Sleeping
I'm always tired, help I'm always sleeping? - Yahoo! Answers
Hope this info helps.
Thanks for your feedback on this thread. Keep on sharing...
Regards