The reason chess.com was made was for chess, hence the purpose, name, and creation of it. I am yet to understand why people use it for socializing.
There are a couple websites that might help you understand. Both are Wikipedia. If you type in the words "chess" and "game" it gives explanations for both. Chess is a game, designed to be played by two people (although now it could be played by computer). And a game is an activity done for enjoyment, entertainment, learning or interaction. So to understand the reason chess.com is used for socializing you might have to first understand what chess is, what a game is, and what socializing is. To ask why chess.com is used for socializing is sort of like asking why a photographer uses a camera to take photographs.
RedGirl is the living proof that on this page women are truly women. However I dont think a distant relationship with her would work, I live too far away from Israel and dont have the money to pay for a plane ticket to such a distant destination.