Sometimes I do, Sometimes I don't. To be honest, my genitalia is usually cleaner than most public lavatories.
How do all you alcohol gel users cope? Do you not handle money? Do you sterilize yourself after you touch any surface that somebody else must have touched? Do you levitate into the public lav and manage not to touch any surface throughout the entire process?
What about the keypad on cash points? Some grotty monster might have been there five minutes before? Maybe getting 50 notes to pay the filthy, disease ridden skank whom he's recently had the pleasure of fussocking around in her festering orifices? Bet he didn't use hand gel?
Weirdly, I don't seem to get ill very often and I've yet to contract an STI despite being sexually active for 25 years!