As a Dom, I find that what you said about most of us being cowards in public is interesting, and somewhat true. However, most guys just want to avoid going to jail, or even getting hassled by the man. ( my age is showing. )
As far as being dominant only in the bedroom, anywhere else that it is appropriate is all a matter of taste and limits. Some people's limits are far outside of the range of other's.
I know and understand that it is fun and exhilirating to be pushed, but there still have to be limits and boundaries. That is what SSC is all about.
It's going to take some time and alot of searching to finally find that one that makes the sun rise and set in their eyes for you, but you have to ask yourself " is it worth it?" and act accordingly.