Yes you can get melanoma genetically, our son also had it on the bottom of his foot at birth. First thing I noticed at birth, what the h*** is that? Eventually it was cut off when he was older.
Sunburn destroys vitamin D created by sunlight and damages skin cells. NEVER get sunburn!!!!
I never wear sun screen but collect LARGE brim hats and always wear long sleeves and long pants in the sun.
I collect sun light for health, 5-10 minutes per side per day depending on the strength of the sun (less on July 1, more on October 1), every chance I can in a bathing suit. Think rotisserie.
I had pre-cancer cut off from sunburn when folks did not know the risks of sunlight.