I think tan girls are very beautiful, but I also think pale girls are very beautiful. I always tried to get a tan when I was younger, but I'd just burn. As you can see, I'm ridiculously pale. LOL. So I gave up on trying to tan and decided to just embrace the skin I was born with. I think all skin colors are beautiful though. :)
I don't but most of my friends do it on special events so they don't look so ghostly in photos. Also tan skin makes you look thinner.
Hides flaws.. Not my thing though, it's like robbing Peter to pay Paul.. You are tan now but will be leather face in 10 years.. I don't mind being super white, it's whatever.
If it's a spray tan, it's not that big of deal as you aren't damaging your skin as much but it's still a bunch of chemicals that will leak into your blood and cause cancer later so it's still not that healthy.