Thank you! I am glad that you enjoy the site!
I have never used a baby sling personally. I worry that they may hurt my back, and the babies never seem too secure in there, although I always hear that they are perfectly safe.
My diaper bag is most likely the heaviest thing that I carry around. It probably weighs more than my son does! I am guilty of overpacking my bag as well, but you never know when you might need all of that stuff!
For a while I was making sure not to wear my son in a wrap because my back was so sore. It took me quite a while to realize that it was much harder on my back lugging his carseat around than it was to just carry the baby. I think it can take some trial and error to find what will work best for each person