2 young children and strollers

Is getting a double stroller worth it?? My husband and I are trying for another baby, so we want to be prepared, and look around for deals before. My son will be a little older than two hopefully by the time we have the next one. Did you use your double stroller often? I feel like my son wouldn't stay in it anyways, he doesn't like his now. Should I invest in this?? Thanks!