Econo, I suspect you're not an average bike rider. There are no practical arguments for a one-gear bike. It's not like bikes with gears are monstrously complex and break down all the time -- in fact, they hardly ever require any maintenance at all.
So it really comes down to personal preference, and if that's your preference, that's fine. But the original poster of this thread is not an enthusiast, and for an average rider, that was simply bad advice, and was more about Markie going on about Markie than any serious effort to help.