I hope I don't offend anyone, but this has always baffled me. My parents by no means have cheap furniture but we have never discouraged our cats from sitting their little butts down wherever they please. It seems sort of mean to me to not allow one's dogs or one's cat onto furniture, not to mention an indication of just how materialistic that person could be (I mean, really, does anyone care that much about a sofa, even if it is upholstered in Italian silk?... and if one of your concerns in life is as minor as maintaining your pristine sofa, don't you feel damn fortunate?)... This is, of course, just my uninformed opinion and maybe somebody who doesn't let their pets on furniture will come along to correct me. My question is: if you keep your pets clean and well-groomed, why wouldn't you let them sit on the sofa or on a chair if they so choose?