You can't help but change when you have a kid, and for me it was just a sense of I didn't feel like anything was missing in my life and it wasn't. It all came at just the right time, and now if I am absent from my son, I do feel like something is missing.
To furnish the means of acquiring knowledge is. . . the greatest benefit that can be conferred upon mankind. It prolongs life itself and enlarges the sphere of existence.