Yeah… I think accents are primarily where you grew up, and/or are living.
I know a girl whose parents had fairly thick Scottish accents, but she grew up in southern England near Southampton, and oddly enough, she sounds more like a BBC announcer than anything else. Nobody who hears her talk will confuse her with a Scot.
The funny part about accents is just how relative they are. She was convinced that I had this super-thick Texas drawl, when in reality, it’s very, very mild (to the point where people in Dallas say I don’t have an accent).