I recently moved my website from Tumblr to WordPress. Here the top 5 reasons I switched:
1. Tumblr’s lousy search engine optimization
2. More customization with WordPress
3. Tendency to overshare on Tumblr
The move took more of my time than I wanted it to (like the time I moved from Blogger to Tumblr), but I needed a content management system and space to grow, and the obvious answer was WordPress. I’m glad I switched.