In case you're serious, it's because "do not be a crybaby" is not an appropriate response to someone suffering from mental issues.

If you said to me "Hey, I cut my hand really badly, and I'm bleeding quite seriously. What should I do?" it wouldn't be correct to say "do not be a crybaby." The right answer is "Go to the hospital and get some stitches."

It's the same with mental issues. They're a wound like any other.

i don't think you know what the word "data" means. of course, that's beside the point.

I doubt it will help, but just on the off chance that it does, you should read these:

http://hyperboleandahalf.blogspot.com/2011/10/adventures-in-...

http://hyperboleandahalf.blogspot.com/2013/05/depression-par...