I never really gave this any thought until you mentioned it. I could care less that somebody might think something like that but I do know that some of the bikes in the rack outside my job are there for child support payments and DUIs. The people I work with have known for years that I'm an avid backpacker. They were not phased when I took the notion to start commuting by bike. They and I both say I'd probably started biking 35 years ago if the thought had crossed my mind back then. Then again I've got well kept bikes and they get parked in my office every day so probably not very drunk looking.