D.J.
Hi J.,
I have 3 kids. The oldest is 3 years older than the next. The last 2 are 1 1/2 years apart. Here is my 2 cents. At 1 1/2 years, you are still doing diapers or pullups for 2 kids. This is difficult on you. Also, at 1 1/2 years old, they still need a lot of attention. Those things said, they do fight because they like the same toys and still want a lot of attention but they are also good friends. When their older sister is playing with a cousin or doing her homework or reading, they can play together without too much chaos.
With the 3 year gap, initially there was a little jealousy, but it ended quickly. There is not much fighting, but there is some frustration with the little kid factor. The down side is that they are not friends like the other 2 are. I only had to change diapers for one child and the older one would help some, but they don't play together very often. Also, when the second one came, my 3 year old was pretty spoiled and did not want to share her space, her parents, her toys (even the baby ones that she no longer played with), or her old clothes. However, a sibling was just what she needed.
I love my kids and would not change what we did even if I could. We got the kids we were suppose to have at the time we were suppose to have them.
I am a firm believer that God is in control of that. We get what we can handle and need.
D.