I don't mind the idea of only one gear on the flats - I pretty much do that anyway

I don't mind not having a low enough gear going up the hills - thats how it often is for me anyway and I am used to grinding

What scares the p*** outta me is the descending with legs flying and them not being able to keep up with the pedals and eventually flinging me off into space - no doubt at such a velocity I would be able to report on the twelfth moon of Jupiter!