I know this would sound silly but I have started to envy my friends who have older children than ours.
For context, I am currently pregnant and have a 2 yo DS. I just turned 35 and had my first one at 31. I have friends who are late thirties but their DC are going to start secondary school this year and another one in primary school. I envy them because it feels like they have easy lives with bit more time as DC are bit independent now while I am still going to be looking after toddler and newborn. Most days I am utterly exhausted and massively regret not having DC earlier in late 20s but then again I wasn't even sure until 30 if we wanted any DC. Overall I have a decent life with helpful DH and adorable DC who I going through terrible 2s, though we have no family to support us with childcare etc, which makes it quite hard but I should just get on and accept my reality in life and carry on I guess.