The advantages of working in 3D are not initially apparent to most architectural users. The benefits come when you start creating your documentation and you realize that your views are automatically defined for you with your 3D model. Your schedules and views automatically update when you change features. You can explore your conceptual designs faster and in more depth.
Learning to use Revit will not make you a better architect. However, it will allow you to communicate your ideas and designs faster, easier, and more beautifully.