I have a bidet at home and wish they were more common in the US. But how is it gross to rinse a dirty part of your body with potable water? I think it's grosse

I have a bidet at home and wish they were more common in the US. But how is it gross to rinse a dirty part of your body with potable water? I think it's grosser to use the bathroom for solid waste and expect rubbing it off with tissue paper is going to result in an equally clean outcome compared to rinsing with water.