Shields (even though rather small ones) have totally saved my butt after I had circumnavigated the galaxy. But let me tell you the whole story.
After more than 5000 jumps around the galaxy finally in the system in which I started. My hull was down to 60 something percent.
Me -> a bit space mad feeling like the greatest guy alive
Me -> landing on a planet in said systems … it was a dark (and stormy) night
Ca. 200 meter above ground:
Me -> thinking: Woohoo! I'm so awesome! I wonder how a night-landing looks from the outside.
Me -> switching to outboard camera and accelerating downwards
Me -> not realizing that the ground comes closer … because it was pitch black
Kassiopeia hits the ground, the shield glows for a moment
Me -> OH POOPOO! OH POOPOO! OH POOPOPP! I'M GONNA DIE! LITERALLY AT THE FINISHING LINE! … because I remembered that my hull was not at 100 %
No explosion
Me -> calming down, checking systems … That was a close shave!
My shield was down to one ring (maybe less). But it took up all the kinetic energy from the impact and as I said above, it saved my butt.
Since then am I a bit paranoid whenever I intend to land. No matter if it is a station or a planet in the void, I always switch on the shields.