Not saying **** and stealing are the same. I am saying that justifying something (anything ... theft, ****, murder, whatever) in your head doesn't make it true or even right.
Just because someone *thought* a bike was abandoned and took it, doesn't mean they cease to be a thief. Can you imagine it? "Officer, I thought that Camry was just sitting there because its driver no longer wanted it, so I figured, why not help myself?!?"