As one who had essentially two babies (17 months apart) I can remember the double stroller days. That darn thing was so big and what a pain! One of my favorite ages was when the kids got old enough to walk on their own and not need strollers anymore.
They have some fancy ones - Britax B-Ready double stroller but really it's just a pain to have anything that big. For a while we had two umbrella strollers with clips to keep them together. That was ok.
I love babies - so cute and cuddly. But every age my kids get to opens up more opportunities and fun activities we can do. From playing dots and boxes, doing math puzzles, going places without worrying about extra clothes and diapers... I love that my kids can play independently and not need me for everything.