Yes, we have a stroller, and I couldn't get along without it. We live in Texas where it is HOT and when we travel in the summer we always take the stroller so that we can take the boys inside the mall or store with us. Many stores don't mind at all if you come in with them in a stroller (not stores like Walmart with food, of course).
Also, my husband needs to walk for his health and he is supposed to walk without stopping. When the boys are on the leash, they want to stop and smell and pee every so often. So, we just put them in the stroller, they love to ride in it and my hubby can do his walk without stopping.
My hubby just rolled his eyes

when I got the stroller and he doesn't much like to push it - although he will - but he certainly sees the value. Also, it is a chick magnet!!!

Sometimes when I want to shop somewhere they can't go, he will put the boys in the stroller and sit on the sidewalk or in a park - when I get back to him, he's always surrounded by girls/women playing with the boys!!!