Is it just me, or does wordpress suck form a coding standpoint?

It's not hard, its the principle I am taking about. What I am having trouble with is actually coding the back-end of wordpress. For instance, there is a function I need outside of wordpress that is in wp-includes/post.php, I need to include five other files (one that has really odd behavior) to use that function because post.php did not include them itself. Any good practice would dictate that post.php include every dependency it had, common sense would dictate that it at least say what it requires.