Part of the problem is that we aren’t even a 100% sure why we need ***** or even what ****** us to have to *****. It just seems like too much of a risk to mess with a system our body has when we don't even know that much about it. If we were designed to spend 1/3 of our lives doing it, it must be important. ***** has other beneficial factors, some of them being that your body heals better while ******, you grow more while ******, and it gives some of your bodies functions a rest that have had to work all day. I don't want to die in my 50's because I burnt out my body too fast, especially somebody like me who is trying to healthy as long as possible. This is in addition to the benefits of ***** to your mind that we are only starting to understand. It is probably even more important than the physical aspects of *****. Also similar to what some people have stated above, we shouldn't try to shove more hours into the day than there already are. Life is hectic enough as it is. I don't want to give some corporation an excuse to start working people 18 hours a day. The fact we need ***** is one of the reasons they don't do things like this as much as they could get away with otherwise.