Thanks for your feedback on this issue. There are a number of reasons we made the decision to discontinue personal tasks, including the fact that we weren't seeing the sort of usage and engagement metrics to justify building this into the task enhancements in Confluence 5.5. We're not trying to solve the personal task management problem - there are a lot of great tools for that - rather we are focused on team collaboration and we see contextual tasks as a way of enabling that.
We realize that some users valued the ability to track personal tasks in Confluence alongside team tasks, so we recommend creating a restricted page with these tasks instead. That way they will also be captured in the new Tasks view.