Double Stroller Necessary?

Brandy
I'd love to hear from 3+ time mommies. We currently have an 11m old, who will be 1.5yrs old when our new baby is due. I'm debating this double stroller thing (leaning more towards getting 1). Curious about anyone's experience with 2 kiddos about this close & their use (or non-use) of a double stroller?