Hi S.!
I went through this intense intellectual struggle before we had each of our kids too. It was so agonizing thinking "I love what we have soooo much, do I dare mess with the dynamic by adding another kid to the mix?"
When we had just 2 girls (3 years and 18 months at the time) it was so glorious. I was both thrilled and a wreck when we found out we were pregnant with a third (girl). I didn't want anything to interfere with the close bond the first two had formed with each other. Of course, when #3 was born we all adored her instantaneously and the three sisters are as tight as triplets. They are all so lovely and unique and fiercely protective of one another :) How could we have NOT had her?
So, 5 years passed and the second I gave away all my baby gear (thinking we were done, of course) and fully satisfied with our family of 3 girls, we found out we were pregnant again and I freaked. I had just started a great new career, the girls all cried when we told them the news, I didn't know how it was all going to work out with such a big age difference. On paper, the whole thing seemed very impractical...
And here we are now, with our beautiful 4 month old baby boy who is SO loved by all of us. The girls adore him and are so gentle and loving. We're struggling a bit financially with me not working ... but you know what? Who cares.There's nothing more important in this world than love.
I guess my point is...
Making the decision to add another child to the family isn't really something you can do in an intellectual, practical kind of way. It's something the heart decides all by itself. I can't believe I stressed so much before each of my children were born. I can't imagine life without a single one of them. Each has added such immeasurable joy to our lives :) I used to think it was possible to regret having had that next kid... but you look at the kids you have right now in front of you and you know in your heart that's just not possible.
Each time we were loosely contemplating another child, my husband and I just kind of adopted the attitude of "letting fate decide" and semi-conciously got lax with the birth control. If we got pregnant -okay. If we didn't - okay too. It took a lot of the mental decision-making pressure off.
Best Wishes to you and your family!
...and to that little angel out there that keeps whispering in your ear :)
May you be well in all ways,
Annie