Tanning can definitely be addictive.
NY TIMES ARTICLE ABOUT TANNING ADDICTION
There is just absolutely NOTHING healthy about a tan. It means that your skin is DAMAGED. I was one of those who did the tanning salons in my 20s. Got blistering sunburns as a child (stupidly). Have had multiple moles and lesions removed. And oh yeah, a nice basal cell carcinoma removed from my nose last year, in a rather unpleasant two stage surgery that left me with a lovely scar.
I am now religious about sunscreen, but live with the knowledge that my risk of melanoma is multiples higher than average, I have every high risk factor.
That said, I have a dear friend who has olive skin, was never a sun worshiper, lives in a cold Northern climate...and she has had melanoma. Luckily it was caught in time.
If the fear of a deadly cancer isn't enough for you, add in the fear of really, really wrinkled skin. I have BEAUTIFUL cousins, younger than me, who were sun goddesses in their teens. It's literally almost scary to see the depth of the wrinkles in their faces now, and they are just in their 40s.
You're the only one who can decide to make the change, nothing that I say...or anyone else here...is going to make you change. Plenty of people enjoy laying out in the sun, there is nothing inherently wrong with that. All it takes is a dose of common sense...liberal use of sunscreen...avoiding the sun during the highest UV times...and seeking some shade from time to time.