I got as close I could get to having kids when I lived with my sister and brother in law years ago. My brother in law worked days and my sister worked nights. So when I got home, she and I did a tag team and she would hand off the kids to me. I was alone with them for a couple of hours, and my brother in law would come home and we cared for them together. I was constanly worried about them falling and hitting their little heads (Lex was 3 and DJ was 2) or choking or something and I never relaxed until they were asleep. And even then there were the nightmares, and the time DJ wedged his head between the bed and the toy chest but just sat there, not crying, trying to be a good boy like I told him. I don't know how long he was there but it broke my heart to see him like that.
Or the time, right after I had moved out, that Alexa was sick and my brother in law left a frantic message with her screaming in the background on my machine and when I heard it, I dropped everything and ran over there... She was hysterical, stuttering away and when I walked in, she ran to me and couldn't even get the words out, she was so upset. It took me 15 minutes to get her calmed down but I finally did. And when I went to the store to get her prescription with my bf at the time, he said, "You really don't want to have kids? You're so good with them."
Even he didn't understand. I love those kids more than I thought possible but that's enough for me, to have them in my life.
I just remembered that that night Alexa was sick was when I had been heating up a big plastic container of sauce in the microwave and when I ran out of the house (I didn't even have shoes on), I forgot about the sauce too. A month later, I opened up the microwave and there it was. Didn't look very good at that point!