[drivingmenuts]

"Kindness" is a pretty vague term. I think "empathy" might better suit your question.

It's rather difficult for some types of people to learn, especially if they're not exactly wired for that or their cultural or familial background didn't put much emphasis on it.

In the programming profession, it's not particularly useful when you primarily deal with computers (computers just don't care).

[eropple]

No programmer in any company of any reasonable size deals primarily with computers.