Yea yea, I know this title is very generic and yes we all like to bag on Microsoft but this is more of a very high level side by side with Microsofts product, Windows.
Why is Wordpress like Windows?
They both are slow over time. The more you add the slower it gets. The more software, plugins you add the slower it gets.
They are both very insecure and require a separate security package.
Here is my experience with Wordpress since this is all just a learning experiment.