It's a fair point, but the only way at all to land on a body that has no atmosphere is to use rocket engines that point down. The Apollo Lunar Module landed on its "tail", though it did at least have a separate ascent stage with its own engine, so might have had some chance of taking off again if the landing was damagingly hard.
I would argue plenty of lander designs (including LM) were tailless and landed on their butts! That should be easier than the balancing act of standing on the tail.
