I choose to do this why??

So I started preschool a couple weeks ago, which I love doing and enjoy having a little extra money to actually do stuff with =) But my 3 year old class is, well lets just say, NUTS!!! I have never had a 3 year old class this hard! I am exhausted after class every time! I feel like I am always yelling, well not yelling just being a little firm;) and these 3 year olds CAN NOT do ONE THING, they can't cut(its like they don't even know what scissors are) they can't follow directions, I tell them to do something and they look at me like I am a RETARD! I've done 3 yr. olds before and they at least knew a little bit and most of them by the 3rd or 4th week were fabulous with everything, not this class, I don't know that they will EVER get it. So, needless to say I'm telling myself I will NEVER do 3 yr. olds again, even though I most likely will =)
Anyway, I just needed to vent and if anyone has some advice for me you are more than welcome to send it my way! =)