There's no word in the English language

[saresm11]

For... and I think about this a lot. The weird feeling for those amongst us who thought they'd never have children, but then did - and it was the best thing we ever did. And then, that feeling of - I almost didn't do the very best thing of my life. And you'd never know that you'd missed out. There needs to be a word for the terror of almost making the wrong decision. Do other people feel this?

Terror of almost making the wrong decision is quite interesting. You don't know it's the right desicion until its been done so really how right or wrong are any of our choices?

Yes feel that for the exact same reason OP

that's the thing right. I grew up with amazing women, who did not have children so I never would ever think it's the key to happiness. But I often think about how close I came to not doing something that is the very best thing (for me) that I've ever done