Is it that difficult to rotate one's hand so as to reach a single finger one inch up from the bottom to located the easily distinguished button?
I'm being totally serious with the question. Do people really find the power button on the iMac difficult to locate without rotating the entire computer?
At first I hated the idea of ports and power button on the back, but I found that I rarely need to add/remove cables once they're plugged in, and I only power-down the iMac on major software updates or before a vacation, etc. The power button is easy to find, so I eventually found it to be a non-issue. But that's just me.