Big age gap?? *Long post*

For those who have children with big age gaps (8+ years) how was it??

I have two boys, ages 4&6. I had them young and experienced ppd after my second so it took time. Now that I’ve healed, I’ve gone back to school and enrolled in nursing- the next 4 years is going to be dedicated to focusing on my career. Which is amazing, I don’t think we could advance financially without a 2 person income, and i’m doing the unimaginable for myself.. but I can’t help but feel that our family isn’t complete. I always imagined my kids would be close together in age, so if we did have a 3rd, it’d grow up as an only child in a lot of ways because my boys will be so much older.. as well as i’ll also be older (almost 30) which for FTP isn’t old but when you have 10+ years of parenting already under your belt, you internally feel equal years older😂🤦🏼‍♀️

This is mainly a vent I guess.. when do you KNOW you’re done having kids? And back to my main question, those with big age gaps between kids- how is it? Is it hard to go back the sleepless nights and diapers stage? Do you have more patience, less patience? Give me all the details😭 Thanks mamas💜