I've been hearing recently that all these germs around us, in us, and on us help to make our immune systems stronger and quite possibly prevent the onset of certain diseases and cancer.
Being too sterile with sanitizer and wiping down everything you come in contact with does nothing to help your body build up defenses to certain viruses and bad bacteria.
Still though, wash your hands after the restroom, the strength of the bacteria after doing business may be too strong if you were to pass it accidentally through contact.