That's why we have different preference when playing and in your case you're more comfortable in desktop. Well, I don't usually play in desktop because i'm often at work, so mobile is suited me the most especially when at home I like the idea that I can gamble while lying in bed. Rollbit has a user friendly mobile version the reason why it's not a problem for me to play even in small screen.
I completely understand where you're coming from. Everyone has their own preferences when it comes to gaming, and it's great that Rollbit has a mobile version that works well for you. It's definitely convenient to be able to play from your phone, especially when you're on the go or at home in bed. It's all about finding what works best for you and your lifestyle.