Their have been a lot of bloggers that started out using blogger as their blog platform. Soon after they got going they found that they were limited in capacity. Most decided they wanted something more and that was found in the WordPress blogging platform. Why WordPress? Well you can read more about the features on the official site WordPress.org but here are three great reasons:
1. Power: Oh more power! The full control you have with WordPress is totally amazing. You can design your own templates, customize existing ones, add third party plugins, and add with little work. Nothing will beat WordPress in terms of control and power.
2. Templates: The large amount of free templates for the WordPress platform is awesome. You can find new templates for free and upload them with no problem at all. Better yet, you can have multiple themes uploaded at once and switch between them with the click of a button.
3. Open Source: WordPress is open source and is constantly being improved by the community. You will never have to pay for the platform software and the updates can be made with ease (automatic).