How do you know you’re done having kids?

Ja

So my oldest is about to be 9. I’ve been with my boyfriend since she was barely 2, so 7 years now. We waited a little longer than planned to have another baby due to him constantly being deployed and then wanting to buy a house first. We finally had our son on New Year’s Day 2019. My whole pregnancy and even right after the birth, I felt like this was it...i was done having kids. I didn’t have an overly horrible pregnancy and my birth was textbook, so there was nothing traumatic to make me feel like I didn’t want more kids...it was just a feeling I had. My boyfriend sometimes talks about getting a vasectomy. He’s able to get a free one on the military base so he’d like to take advantage of that before he gets out of the army in January. But I guess as that becomes a reality, it makes me sad to think I’ll never have another. I don’t know...I can’t imagine my life being more complete than it already is, I don’t think I would want my kids close in age and I definitely don’t want another big age gap either. I guess deep down I know I’m done, but so hard to accept it. Anyone else feel like this?