The question of whether getting a genital piercing is worth the pain, is a predominantly subjective one. However, based upon the opinions of many people that have had genital piercings, it can be deduced that the vast majority of those that have underwent the procedure are satisfied with the results.
For men, a genital body piercing not only adds sensation to them during sex, but can add sensation to their partner by providing additional points of stimulation during intercourse. Clitoral hood piercings are known for stimulating the clitoris quite nicely, not only during sex but can also provide pleasant sensations during the day while the wearer goes about their daily activities. While genital piercings may be well worth the initial pain (they are one of the most painful piercings to endure), piercing the clitoris is not recommended and can cause permanent numbness or loss of sensation.