power steering pump problem

Wonder why my trans doesn't leak all over the place?
Must be completely different rubber in the steering system (hoses and all)

40 years of ATF for steering fluid.
The BMW says ATF ONLY on it.
455,000 mile Honda Accord had ATF all it's life.
478,000 mile Nissan the same.

I think someone fell for a myth, and there was/is one that says the seal conditioner in ATF will make the seals leak.
Still, never an issue.