Hidden in this passage is the truth about self respect. Love thy neighbour as thyself.. In other words we are commanded to have the utmost respect for ourselves, yet in the modern age, people seem to have forgotten this directive. Drunkeness, drugs, fornication, even tattoos and hypnosis are things that people do to themselves which show a lack of self respect for their God given bodies and minds. How then, can a person ever respect others if they take those first steps down the road to losing their self respect?
i think hidden in that passage, among other things, is this,
that if what act, thought, or desire you have, does not work to please God, know Him, Love Him, or serve Him, then it is not for God, but for yourself,
if we love God, we want to love ourselves and others for love of God,
and on that note, in the case of tattoos, i personally would not get a tattoo, because for love of others, i would not want to influence them to get a tattoo, because even though my intentions may have been good and completely selfless, i cannot expect that others who may be influenced by me would have the same intentions.
of course i do not think it is a sin, atleast not in every case(some people do go to far or get tattoos which are clearly sinful) but in regards to self respect and love of neighbor, tattoos are not beneficial or fruitful…they are quite useless in those aspects, perhaps it can be pleasing to God by your personal want to express your loyalty to God by imprinting on yourself some religious symbol, but other then that…it is not something that without we would suffer in any way, and it does not work to love our neighbor.