Oh most definitely agree. Sleeping is universal because it helps the brain rest and reorganize. Sleep is massively beneficial (obviously). However, once we understand the fundamental cause of a particular instinct (i.e., sleep, sex, etc.) we can, in principle, start to intelligently direct it how we would like it to be (as opposed to how natural selection designed it to be). My general philosophy is that the 20th century was spent understanding biological and physical law; while the 21st century will be spent tinkering it in profound ways. Tinkering with biological law will allow us to design our own conscious existence however we would like it to be. Tinkering with physical law will allow us to design space-time however we would like it to be. I doubt this entire process will take place this century. However, I do feel like we will make extreme strides this century towards redirecting our instincts in more preferable directions.