While I can assure you I am in the former category of pet owners, I acknowledge that not all are like me and completely understand the reason for the rule. Also, I am not sure I would enjoy the ride as much if I had to worry about certain things.... like finding a station where there is grass near the platform, or my dog catching a scent of something she deems suspicious in the middle of the night and feeling the need to loudly warn me about it much to the dismay of my fellow passengers.The sanitation habits of pet owners range from incredibly clean to absolutely disgusting and the last thing I want when I board is several hours of some prior occupant's stomach churning pet funk at Amtrak's sleeper prices. Amtrak compartments are full of fabric and carpeting so it's not like they can be sanitized after an accident. This is one area where Amtrak and I see eye-to-eye and if it were up to me no pets would be allowed onboard. That being said the government's mandated acceptance does not appear to have caused major problems as currently implemented.