How do you know you’re done having kids?

I love all three of my kids- I have a 14 year old, almost 11 year old, and 21 month old. My two oldest are girls and my youngest is a boy and the first with my current husband. We have a great life- he is 20 years older than I but we are literally best friends (and he is the sexiest man I know). We own our own businesses and work together. He is the love of my life. (We’ve been together 8 years) It took us 2 years to get pregnant with our son and we’ve been trying again for another for 6 months... Literally feel so desperate for another baby even though I know I’m so blessed with the 3 i have I am going nuts waiting to get pregnant again. I want more!

So- if you were done having kids how did you know?! How do you decide when to stop?! We make plenty of money, own multiple homes and want for nothing. Mamas of 4+ is this how it feels to want more?! Am I crazy?! I am afraid no matter how many I have I won’t ever be done. My grandma had 14! 🤷🏻‍♀️