The 5-year gap.
My daughter and son have a 5-year gap. We didn’t plan on that gap. In fact, when my daughter was two, and we were so much into traveling, I thought it would be great to have the City Mini GT double stroller. That is if in case I suddenly get pregnant, and we later travel to Hong Kong or Singapore (where walking gets you to most landmarks) with both kids. But that didn’t happen. When we traveled with our son, my daughter was too big to fit in a stroller. Our son just used his sister’s old stroller, which meant big savings for us.
Anyway, the 5 year gap has its disadvantages, I just choose to look at the advantages. I’m pretty sure it will have much more advantages when they get older. As Oprah says, always count your blessings.