The problem with having your children 2 years apart is that by the time one of them gets through whatever crazy phase they've been in, the next one is starting it. Only you don't remember that they are just being [insert age here] and you think the next one has really lost her ever loving mind. So you spend about 2 months trying to figure out what the heck is wrong with this child?!? and then you remember this seems hauntingly familiar. This doesn't really help you very much though because the way you handled it with the last one will not work with this one because God has a twisted sense of humor and made each one of your children so very different from the others.
In some ways, however, the differences save their tiny little hides. I don't know if I could handle having 2 of any of my children. That doesn't mean I would ever give up the chance to have the three kiddos I have, just that it is both the rise and fall of parenting these days that they are all so very individualized.