I would not be tempted to steal a bike. Period. My grandmother lived in poverty all of her life in a bad neighborhood. I assure you she would not be tempted to steal a bike either, regardless of where it sat, for how long, or the price, or the lack of lock.

If it were an unlocked car that was stolen. Would this bother you?

Is it only wrong to steal if you are above the poverty line?

Is it only wrong to steal in so called "good" neighborhoods?

Is it only wrong to steal if the true owner of the property doesn't lock up their possessions?

How locked up does something need to be, to be locked up enough to be "allowed" to be stolen?