for the past 5 years I conducted clinical research in the second largest burn center in the country. I also had a few projects in the trauma center. I work with fortune 500 pharmaceutical company CEO's and VP's from around the world. They all know I ride and ask how my project is coming along. Never once was my credability questioned to employers or me by anyone? They understand the importance of my work, my opinions and my perspective. The fact I ride, has nothing to do with my professional demeaner. I wear Armani when I need to and I wear Joe Rocket when I need to. The nurses I work with all ask the same question? Do you wear a helmet (Az is a no law state) and I answer; always.
Look at the demographic that has the issue; 45-55yo women who have zero exposure to what you do when you ride or why it empassions you. their exposure is watching the video clips on the 5:00 news of sportbikes running from the popo and watching some flip flop wearing moron hoist one up in mid-morning traffic.
Show the ones concerned what motorcyclists do in the community. Charity rides, toy runs, raffles for non-profit groups, christian rider org's and the amount of money bikers put back into their community. Show them the things they are not exposed to by the media.
Otherwise tell them your wife says you have a hot ass in leather and you are doing for her.