Is double stroller necessary?

Maggie • Mommy of gentlemen and one queen ! 2yo gabriel steven and baby Carter james 😍 baby girl ailani due October 16th !

So I have a soon to be 2 yo son and one on the way I was thinking of purchasing a double stroller like this one i can also remove the back part and add a car seat a lot of people(family) are telling me is not necessary just get a single for the baby that comes with a car seat . How many of you mothers use double strollers with a toddler and a baby ? I want to hear your thoughts.