no its because limbs/risers can crack after dry firing a bow...

you ever see a bow explode?

my uncle had a custom Hoyt Pro target that blew up on the first shot, top section of the riser exploded and landed at his feet... was a slick metallic blue riser with white limbs, nice bow...

still have the Martin Tiger here as well... Fineline sights, overdraws, couple Bitzenburgers...

i suppose i could have my uncle put it all back in order, but like i said, could be cracked and i dont want to mess with it and have something happen... plus the technology today far surpasses what was in the 80s and 90s...