Have your children grow together, then they develop closely and you are doing similar things with them. You go to the park and they all play on the equipment. Growing together they will play together, fight together learn to share and end up with best friends for life.
I knew someone who was the youngest of four children all were 5 years apart. That means that nappies and babies were in that household for eight to twelve years!!!!
I have twins, my eldest is 11 years older. Though twins were hard work at the beginning, its wonderful and amazing having these two beautiful almost seventeen boy and girl.
However the reality is babies (my twins were completely unplanned) can come unplanned and the thing is lets just love them and enjoy them whenever they come.