Well, I could now list all the pros and cons of wordpress but you did a really good job. I have no experience with Drupal and I don't plan on having one with it since I just can't think of giving up the convenience and and established personalized theme.
The thing about Wordpress is that there is a wide base of developpers. They are very eager, so once they are infected with the wordpress spirit they are hooked up with it. Some plugins do have errors and since a lot of people are giving them feedback it's only a question of time once everything gets repaired. The software is getting more complex and the plugins tend to mess up both new and already existing features... THUS my tip. Do not over-utilize plugins and if you use a lot of them you should test them beforehand.
The 2.5 Plugin Error Site on wordpress.org should also help in questions like these:
http://codex.wordpress.org/Plugins/Plugin_Compatibility/2.5
And the Forum bears a helping hand too:
http://wordpress.org/support/
If you are a newbie among bloggers, do some research and figure out what platform is the most fitting for you because a change of platform can be a pain. A REAL PAIN!
Plugins...