If it is any consolation, I don't have one either. A nice sharp Swedish saw cuts pretty darn fast. At a much slower pace, I once cleared a fallen tree ('bout 8-9 inches in diameter) from a road using a machete-probably not the optimum tool for the job.
Frankly, I don't like chain saws-just too darn noisy and a tad unsafe.
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Geezer in Chief