Despite having to work harder at it, I'd rather go uphill than down.
Going-downhill is gravity-assisted. The feet take more of a pounding and the knees are working hard to prevent that Humpty-Dumpty tumble.
A solution - something my husband taught me - is to criss-cross the hill in a series of connected ess' (s's?) , much like I did when I used to ski. It's certainly a kinder way down.
Oh and it also works well for ascending the hill, when your lungs begin to protest.