Picky eater or just being a jerk?

I cook almost every night for my husband....and it feels like he always has a problem with my food....he says it tasted really good, but maybe the meatloaf was a little too "tomatoey"....or, I'll bring him a burger or a sandwhich, and it's, "I like my buns toasted!" ....Or the meat is a little "on the dry side" A few weeks ago I learned how to make a Rueben sandwich (one of his favs) and he said it was good....but when I went to make it this time, he asked to please er the bread on the inside, because he didn't like how last time the er got all on his fingers....this is making me feel like I can't do anything right! Come to think of it.....I even got yelled at this morning for holding the dog's leash wrong(?) so maybe it isn't just the food? It has been like this our entire marriage.... We've been together for over 5 years.....maybe I am just being too sensative....but I kinda feel like a doormat.....?