WARNING!!! There's no encouragement to destroy one's body on purpose in order to boast with scares and pretending to be a macho, such a behaviour is lame and finds no acceptation!
What do women think about scares on the body?
Many stereotypical machos do have scars. It's believed women love scars, because it dlivers them with the info a male is ready to take a battle, doesn't sit the whole life in a lab or office, leads an active way of life and can bear pain.
On the other hand, many BAFCs or other frustrated guys, cripple their bodies in order to draw attention, in order to be avant-garde or original. But when a woman sees a scar is a result of frustration, she doesn't respect the guy. Then he is week because can't control his emotions and that finds a channel in self-crippling.
I've noticed anyway, women finds it interesting a man have scars. What is the funniest, they always ask questions about male's scars after sex, never before... But anyway, I have some scares (reminings after martial arts, army - barbed wire and car accident) nothing serious, no influence on my fitness, a few of half a centimetre (0,2 inches) to centimetre (0,4 inches) and women like to caress it, even kiss
Generally, a signifance of this post can be restrict to a thesis: if you have scars, don't be ashamed of it! Don't hide it!