And on a related note, You May Be Getting Old if you increasingly hear statements like, "I don't know how anybody ever did X without having Y!" and you have direct memories of having did X quite successfully for 10-20+ years without, as you may have guessed, having Y. Because Y didn't exist for most of that time!
...you are "astounded" that some people never heard of some less-than-a-year-old add-on to a fashionable development tool.