There are several reasons to hire a Merb developer. First, Merb is a relatively new framework, so there is still a lot of room for improvement and development. Second, Merb developers tend to be very passionate about their work and are constantly trying to improve the framework. Third, Merb developers have a lot of experience with Ruby on Rails, so they are familiar with the conventions and best practices of web development. Finally, because Merb is still under active development, hiring a Merb developer will give you access to the latest features and improvements as they become available.