I used to look at those "guitar player wanted (under 30 only)" ads on craigslist when I was in my late 20s and be confused about why there was such a hard line on the people's rock band aptitude.

When I got to be around 35 I realized that if you want to be in a rock band, you need to be ok with working a lot for no money and spending your weekends in a van and those are things I just didn't want to do anymore and probably most people in their 30s have a tapering off tolerance for such things.

But for stuff involving computers? They age much faster than we do and will never judge us by our ages.