It's great building characters from scratch, adding personalities and molding their lives to make it the most interesting possible. Then on top of everything, you get to choose where they live. Whether it's modern day or ancient, renaissance or gothic, it is all up to you the writer. I love choosing what they like and what they don't, the places they'll go the people they will meet there. It's something you may never understand until you try it.
Hope everyone has a great week and remember, you're the one that writes your own story!