His take on being an older father was simply this: "Before I had kids I couldn't imagine ever wanting them. Now that I am a father, I can't imagine anything better."
Impending fatherhood is scary at any age, and there's a lot of worry once the kids arrive.
For all that, though, it's the best thing ever, no matter what your age. Just love your kids, be part of their lives, and enjoy the gift God has given you.
Congratulations! I had my only child at 44, the wife having trouble carrying to term till we found the right specialist. Your child will be the light of your life! It's like being a grandparent and parent at the same time; you will probably spoil them a little more than you would have as a younger dad.
You won't be as active, but you have so much more wisdom to teach them that you have learned by your extra 20 years of life experience.
It's the best thing ever!