David von Rosen, who spends part of his year in Dubai, made his fortune through Lottoland. Courtesy of David von Rosen David von Rosen, a German billionaire who founded Lottoland, has lived on six continents. After living in locations including the US, South Africa, and Australia, he chose two places to call home. Von Rosen now lives between Switzerland and the UAE, a combo he calls "unbeatable." This as-told-to essay is based on a conversation with David von Rosen, 50, the founder of the online lottery company Lottoland. Business Insider has verified his residences and net worth. The piece has been edited for length and clarity. Ever since I was a teenager, I've played a game of imagining all the places I'd like to live. I grew up in a very small town in central Germany, a rural and safe place, but I knew very early on that I didn't want to stay there. I wanted to explore the world. Now, I've traveled widely and lived on six different continents.…