Oh absolutely! Having my son has made a hugh difference in my life.
To simplify, he's made me realise how damaging my own childhood was for me. Especially the relationship that I had with my Mother, or lack of relationship I should say. Having my son has made me want to become a better person, to be the change that I wish to see in the world. Of course, it hasn't been an easy journey. The emotional baggage from my childhood still reveals itself from time to time and manifests itself in the ugliest of ways. Never towards my son, but others I am close to. But having my son has motivated me to deal with my childhood issues and not repeat the mistakes that my parents made. One minor issue is the fact that at the age of 33, my own Mother has never expressed her love for me, nor can I ever remember her hugging me. She might have done this between the age of 0-5, I just don't remember it.
My son, I am constantly, without fail expressing my love for him.