I feel for you because it is hard being a neat organized person & no one else in the house cares.
First of all, my opinion is for you to calm down. I have been married for 14 years. My husband is like that and I have had to learn to calm down & learn which battles to fight.
Maybe instead of looking at the bad things, look at how much he does help. There are alot of husbands out there that will NOT change babies or help or do anything around the house. I think you should thank him for the things that he does does. Then when he doens't do the things you "have to ask him to do", do it in a loving way - not to patronize him, but to ask it in a loving way. If you nag, etc.. it will just make him not want to do it.
Things will get better. It just seems bad right now because you have two small children. That will change when they start to get older and more independent. Be thankful for this time though because you will get to a point where you miss this and wish it back and it is too late. Instead of being disappointed, nagging, & upset all the time, learn to spend your time being happy with your life because life changes in an instant. I have learned that the hard way. Take it from a woman who has been through it - it is not worth the fight. Don't get me wrong. It will take some time to get used to, but thank him for what he does do. Have a great week!