The ironic thing is that they're lusting after physical perfection and fitness, but they're just damaging their bodies. Most of those guys are gonna suffer later in life with serious medical problems...
It's sad that people feel the need to do this, it's not attractive. It get you attention I grant you, but not the 'right' kind of attention.
Most peoples' first reaction is one of shock and horror... hardly emotions I'd want to encourage people to have when they saw me...