Only 10 months in here so not the voice of experience but overall I'm happy to be a parent and to have a child in my life even though I started a bit later than others.
I was 45 when I gave birth and tbh was a bit meh and ambivalent about the whole thing before and during my pregnancy.
The newborn stage is HARD and I didn't love it. I'm told some people do love it but, for me, it was more about a sense of absolute purpose and acceptance of my role as comfort and provider 24/7.
The older and more interactive he gets the more I am enjoying being a parent. It is hard work but a lot more fun than I expected. He makes me laugh so much and is such good company (he is a happy little fellow so that really helps).
I can honestly say that I don't regret it at all and am looking forward to the future with my little boy in my life.
Though it's equally important to say that I was happy with my life before kids and think I would probably have led a fulfilled life without being a parent, There are things I miss about the freedom of my life before having a baby but overall it doesn't outweigh the joy of having him, I'd say that he has not 'completed' my life but he has definitely enhanced it.
Not sure if that is the sort of response you were after but that's my experience so far. If it helps for context, I am in a long term relationship with a supportive partner and no major financial worries.
Is here anything more specific you want to hear about?