It totally stinks to get the chance to try out a great baby product when your kids are too old for you to really enjoy it.
My kids are a little over 3 years apart and I really wish that I had known that a double stroller like the Joovy Caboose had existed. While I doubt that I would’ve been convinced to forgo my side-by-side stroller for long walks across the park, a stroller like one would have been great for the bus/subway, for short jaunts and for travel. It can even take an infant car seat as one of the seats, which is pretty handy.