That you decided to get a nipple piercing.
You will feel pain.
Piercing your nipple can potentially decrease sensitivity due to nerve damage caused during the piercing process. Nerves can be disrupted or severed, leading to reduced sensation in the area. Additionally, scar tissue formation around the piercing site can also impact sensitivity. It's important to consider the risks and potential consequences before deciding to get a nipple piercing.
No.
You won't have that problem if you go to a professional.
There are no nerves in your nose that can cause you problems.
Well if you are piercing your self hitting a nerve should be the least of your worries. The chances are better that you will screw up the piercing or contract an infection by doing it yourself. Leave piercing to trained professional body piercers and then you will have not worries.
Piercing the nipple will enlarge it !!!! when you take yhe piercing out after a few months, the nipple will stay larger!!!
It varies from person to person, depending on the size of your nipple.
The jewellery needs to be 2 mm longer than the width of the piercing.
Many are motivated to get a nipple piercing for personal reasons including for self-expression and to feel unique.
Nipple piercing is not only for the look of the piercing but also for personal stimulation, once healed nipple piercings can be quite erotic and will add sensation when the right jewellery is in the piercings.