No reason. It's "just because."
Now, I'm not including television or movies or books in this. Why? Because that's penny-ante, and sometimes a concept just hits your ick or bores you to tears. (Looking at you Dollhouse, which amazingly enough has managed to do both.)
I'm talking about, "Hey, I have a solution to this problem that's been bugging you for awhile. If we do it like this and this, and use this and this product, the probablem might well be resolved. And, oh yeah, I know someone else who used this process and/or product and they said it worked great. If you have any questions, here's where you can reach them."
Cue the other person doing the grown-up equivalent of a 3-year-old's, "NO! I DON'T WANNA!"
"Before you say no, maybe you should ask the person I suggested since they have actually—"
"NO! NO! NO! NO! I SAID NO I DON'T WANNA! I'D RATHER BITCH ABOUT THIS PROBLEM THAN SEE IF THIS SOLUTION WILL ACTUALLY WORK! WAAAAAH!"
This has already happened to me several times today.
In the future, I vow to be less helpful to my fellow man.
Believe it or not, this is not a work rant.