I think a persons morals are closely linked with the lines people draw for themselves,
aren't peoples morals usually expressed in the form of things they wouldn't do, rather then statements of principle which as a consequence exclude behaviours of a certain kind? For example very few people say something like "I'll never hurt a human being". Why because its far too broad and ambiguous. What you won't hurt someones feelings? Well we do that every day and think nothing of it.
So to make it easier on ourselves and to ensure that we're not shown up as hypocritical we deftly reduce our lines to scenarios that are mostly for show and yet pointless and beside the point.
I won't take acid and bam we're fucking our brains with any number of powerful narcotics and psychedelics. I won't hurt children and yet when your kid needs to be disciplined we don't hesitate thinking that we're teaching them a lesson when in fact we're hurting them with negative reinforcement, or when we fail to provide any boundaries hurting them by setting them up to fail.
That isn't to say that fuck up everything in our lives but it would seem to me that we meander our way through life with lofty claims of being great and yet on a daily basis contradict and undermine ourselves.
therefore it is quite easy to actually draw the lines in the first place for those who have a strong belief in their own morals and like to sleep comfortably at night knowing that they aren't complete fuckheads.
The film Blue Murder is a great example of it. Roger Rogerson had set rules up for the crims of Sydney to follow. No peddling to kids in a bid to believe they weren't complete fuckheads and yet their greenlight to their favoured crims ultimately lead to circumstances that resulted in "kids" getting access to drugs.
Some lines are easy to proclaim because ultimately we're not tempted whatsoever to cross them. Like child sex crimes. Surely everyone has that line and many of us never cross it. However many of us aren't turned on by children. We're not sick in that sense. Its a line easily held by people because because its simply something they'd never think of because they're not compelled by their chemistry to perform that behaviour.
i don't want to abuse children, thought doesn't enter my mind but god help those who want to abuse children like i want to use heroin. I thank my lucky stars that my sickness is contained to just fucking myself with smack rather then fucking others.
look i'm not saying its terrible to state what you won't do but I would dare say that sometimes, for some really good reasons, or really selfish ones, we are compelled to contradict ourselves.
I certainly don't want to ever share a needle again and really hope i'm not compelled but hey, and i'm sure Opi8 you can understand what its like when your flying on smack, when you've just popped a massive hit with your last fresh rig and your floating along, barely able to keep your eyes open bam before you know it your helping yourself to seconds and oops there goes your drug buddies used rig.
Quality over quantity has always been my M.O.... I'm sticking with it... 
