People who REALLY want something don't spend a lot of time worrying about the (cost/pain). They focus on the reward at the end. It's good to search your motives before making a permanent decision like getting a tattoo. Your skin will never be the same.
Also if you're young keep in mind what it may look like when you're age 40,50,60, or beyond. There are lots of people walking around with regrets over an impulsive decision they made during their youth.