All I ever wanted to be was a mum, so I just know it was the path I would have chosen no matter what. I could never imagine another path for myself in life, however I absolutely understand why people are childless by choice too. I definitely understand why people don't choose this life for themselves.
I also have more children than I would in my 'ideal' world. I love my children equally, but that 'bonus addition' did not just slip in to our life and make our world complete. Our life is harder, busier and more stressful than it would have been. I'd never change it now it's happened, but if I could erase the love from my heart and the memories from my brain that I have for that child (so I wouldn't know what I was missing) and go back in time, then I'd make sure there wasn't a chance for that pregnancy to happen. If I fell pregnant again, knowing what it's like to raise a surprise baby, I would not go through with the pregnancy.