If you have to pay property tax on your property forever, you are effectively renting the property from the government.  You pay rent or they take your property.  It causes old people, with paid off homes, to lose their homes because they can't afford the taxes.  It causes ranchers and farmers to have to continually sell off property to pay taxes on what property remains, but with less and less property they make less and can less and less afford property taxes, eventually ending up with the family farms and ranches selling off to the mega-companies.

I don't love it, but could live with a sales tax on property, but eternal property tax is evil.