The thing is, I am not a sun-worshipper. Maybe some basics here. Moles are benign. Sun exposure and heredity both play a role in causing moles, as well as other factors. People with an unusually large number of moles are at increased risk for melanoma, especially if a blood relative has had melanoma.
Moles are primarily a concern if they are changing in size, shape, or color.
In that case, a dermatologist should be consulted. People generally, and particularly people with lots of moles, should thoroughly examine themselves every month to look for any changes. I have red hair and freckles on my skin and burn very easily. Also, I have one flat mole on my chest that seems to have changed shape in the last year, and is not symmetrical. I saw two doctors last year, and both said to wait a few years to have it removed, as it should be the size of a pencil eraser.