In my late teens and all my twenties, I only dated older women. Sometimes the age difference was significant, 15+ years or more.
My Mom didn't like it very well and my Dad just smirked. My younger brother once said when I asked him what he thought of my new girlfriend, "boy she is really old."
Now that I am closing in on 50, I've swung to the young stuff in the last 3-4 years
Go for it-it's awesome! Women in their late 30's to mid 40's are in their sexual prime