What is your biggest pet peeve? Why?

So many things bother me that just nit pick at me. I think the one thing that really bothers me the most would be when guys can never figure out the right thing to say. When you want them to comfort you they wont. When they forget your birthday and don't say anything about it. Or when they don't appreciate what i have done for them over the past two years. They just don't get it. So to avoid being angry i try to draw some huge hints to him and say yeah this is coming up. How about this would this be a good idea. Just want to know that i don't have to comfort myself. I want to know that this is not just some joke that its for real and he just forgot and is going to make it up. Thats what i dont understand is how you forget things like Christmas, Valentines Day, your Birthday. Those are things you should always remember and then they make up the excuse oh i forgot I'm sorry honey, i will make it up to you and if never happens. But when its his birthday i got Twins tickets, a jersey, a t-shirt, took him out to eat, and drove to the game. For Christmas i got him Tickets to the Buckcherry concert, a pop corn tin, Hollister clothes and something else. What do i get nothing. Thats what pissed me off is i got nothing. Why? Why do guys do that? Is it just a habit or what? I would like to know so if i keep expecting that or should i wait for something magnificient to happen.