I'm new to this cast-iron stuff. I read all the threads on seasoning, cleaning, etc...but I'm still skeptical. It just feels so sticky and icky all the time. I seasoned it with vegetable shortening when I first got it, and I've been scrubbing it out with kosher salt after every use and then wiping it down with a little vegetable oil. I guess I'm just used to scrubbing my dishes with soap until they gleam...is my pan supposed to stay dirty and smell like burning grease when I heat it? Is that just part of its charm?