Some people are well-suited to animal companions, others use the animal as a punching bag/kicking target, or as a triangulated way to build a Social Media Brand.
It's totally worth it to destroy your dog's hips & shoulders just to get bragging rights on having the "fastest trail dog."
Totally worth it. Your 15 warholian seconds of fame definitely trump your animal companion's well being.
--Karl Franz Ochstradt, who (unlike you) understands that your freedom to do dumb things sometimes affects other living beings.