Mine are 13 & 18 now but their 5 year gap seemed to be considered large when DD was a baby & DS was 5. Most of my peers had a 2.5 year gap with a few under it at around 21 months & a few over at 3-4 years.
I remember one woman had 13 months between her two & said she spent the first 6 months of her youngest’s life crying & wondering what on earth she’d done. Another friend had a 16 month gap as she was older when she started, I remember her saying that she knew it wasn’t medically advisable but she felt time was running out.
I’ve noticed recently that larger gaps of the sort I had seen to be making a comeback. Which has surprised me as I remember most of those with smaller gaps used the rationale of getting it all over with for career/childcare cost reasons, & I would have thought those economic pressures would have increased & not lessened over time.