I should have clarified a little bit. I'm looking for people who own just one bike, not people who own several but use just one for commuting. So far ItsJustMe fits the criteria but no one else. Of course this is a cycling forum and people here are more apt to own multiple bikes just because.

I'm also curious about places like Amsterdam where commuting by bike is normal. Do people there tend to have just one bike or do they have a fun bike and a work bike?