It depends. No one can really tell you how to weigh the pros and cons for yourself. It might be very important to you to try to lighten it, where it might not be as important to me. That's hard to ask someone else.
I will say that treatment may help prevent cobbles and blebs with it later, so if you want to look into treatment options for that reason, it's something to think about. I often hear from adults that did not think it was important to get treatment and when they started getting blebs and cobbles... well, that wasn't what they wanted.
Where is your pws located?