Well, you might want to pack if it makes you feel better about what is in your pants. You also may want to consider it if you wear styles of clothing which might reveal that area of your body a little more. Despite what people have said about nobody looking at your junk...they do, in my experience! More frequently than I would like. I do a lot of physical activity...running, cycling, swimming, skating, etc., during which the body is under more heavy scrutiny from others, so packing 'looks the part' so to speak. I also have pretty strong lower dysphoria, so having the weight and feel of the equipment there is important to me.
Packing can be cumbersome, expensive, or further worsen dysphoria in some cases...Or it can be a suitable way to put your mind at ease...but you will find what is right for you.