I like the idea of the stroller for busy fairs and events where they can get stepped on. It would also be good to toss a blanket over and go into the mall
I usually carry my two in their Kwigy Bo, but they can get pretty heavy... so a stroller would be nice for longer walks. I know my two love walking, but they do get tired when we spend the entire day downtown shopping, so it would be convenient to toss them in a stroller after they are tired. A stroller would also be nice to hold bags, my purse and drinks.
I have to say, I'm envious of the moms that have those huge strollers that can carry everything. It definitely looks convenient!