You are not alone. I prefer gravel over sand, not coase gravel, but fine gravel between 1 to 2 mm size. My favorite gravel is dolomite. With gravel vac, cleaning is easier than sand which can get sucked away. Over time, gravel will break down into sand anyway, so I have to replenish the loss from vacuuming. Gravel allows better oxygenation beneath the surface and hide waste better than sand or bare bottom. The aerobic zone for gravel is about 1/2 inch, and for sand about 1/4 inch, so there is no additional biofiltration benefit by having substrate thicker than 1/2 inch. Bare bottom is hardest to keep clean as there is no hiding places for waste.