Right now I have to say I'm feeling pretty good about our choice to have only one child
I know my brother was pretty upset that I was skipped up a grade so we had to be in high school at the same time, even though I was a freshman when he was a senior and we didn't have any classes together. It was hard on all of us. Both DH and I had tough sibling relationships and bear a lot of scars.
Some siblings are friends others aren't. Good parenting might help, but even with good parenting, some people just aren't gong to be ever like each other. You can only do so much and make sure that they are at least civil in the home, house rules are followed so no one gets hurt too badly.
