If a pregnancy was complicated the 1st time why do some women want to try it again?

My co-worker's first pregnancy (she was 35 already) was complicated, still painful and she nearly didn't make it. She fainted a couple times, got transferred to the ICU and needed blood transfusion.

Then 3 years later, she got pregnant again with twins. She was a high risk pregnancy but this time she had a C-section. Though she said the procedure went easier and nothing like the 1st time. She got her tubes tied afterwards. The twins are already 2 years old.

I don't understand. If it was complicated the first time, why do some women still want to try again? If I were her, I wouldn't risk a 2nd pregnancy.

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She said C-section was easier than the first time. Still... that was very risky. I wouldn't risk it a 2nd time.
If a pregnancy was complicated the 1st time why do some women want to try it again?
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