CF friend got pregnant and decided to keep it

My 40 year old childfree, vegan friend who I have been close recently found out she is pregnant. Her period was late and she started to say things like if she's pregnant this time she's gonna keep it. She had two abortions before and if she's pregnant again it means the baby really wants to come to this world. Whaaat? How stupid is that? Baby wouldn't come to this world, if you two didn't have unprotected sex! She always talked about how happy about her life that she's free and could do whatever she wanted. She has a long time partner who didn't push her to have kids. He was fine with whatever she wanted. He has ADHD. So the baby might ADHD as well. She has chronical back issues which she inherited from her mother. So the baby might have the same. As a couple they have had relationship problems in the last 5-6 years. She always complained that her partner doesn't have empathy, she feels not seen etc. Now she tells that they talked about it and partner said he's gonna support her, they would divide and share responsibilities etc. So she believes that he's gonna change suddenly to that wonderful supportive man! Make it make sense. I lost my respect towards her. And I feel sorry for the baby. Can anyone understand how people change their minds drastically from one day to another? Even CF people can do this. What's the reason or lack of reason behind the willingness of bringing a life to this world?