> I honestly don't understand the necessity or want for something like this.

Here's what I wrote elsewhere:

"Imagine you're a programmer. For us coding geeks, sites like Stack Overflow are a lifeline to getting work done. In fact, we're reasonably convinced that when Stack Overflow goes down, all programming around the world just stops. (Well, at least that's the excuse we use.) Yet, when we read an answer from someone who has fixed that (Javascript) problem we've spent hours debugging, we want to kiss that person's feet with the appropriate Wayne's World salute. It's times like those when a thank you and a (worthless) upvote just don't seem enough. That person saved us from hours of wasted effort and aggravation. That geek deserves more."

tl/dr: I want it because I don't expect something for nothing. If someone provides me value, I want to exchange something in return.