I have always had pale white skin, and very dark hair on my arms and legs.
I didnt start to shave my legs till i was 12(mother wouldnt let me) But at the age of 12 I had more hair on my legs than my brother who at the time was 30, I have always had darker thicker hair on my body.
I choose to shave my legs, and to keep it smoothly clean i have to shave them everyday. I did my arms, once when i was 14 and it just looked weird to me, So i havent since. But with My hair on my head, I have to get it thinned at least once a month or i look like a white girl with a fro going on, lol.
My boyfriend doesnt care. He will provenly admit my arms have more hair on them than his do, but he doesnt mind. Hes just amazed i keep my legs so smooth, lol.
So, I guess really its up to you and what you want to do and whats comfortable. But most shouldnt care weither you have hairy arms or not.