Source of LV's evil nature

[sewabearbear]

No: HPFGUIDX 113358

--- Angie wrote:
> I keep wondering why LV is so evil.  

Me too. I've often wondered what his ultimate motive is. Purge the 
world of mudbloods & muggles and then what? There would be like 10 
people left in the world.

--- Angie then wrote:
> I've thought about DD's comment to Harry in SS that men have 
wasted 
> away in front of the Mirror of Erised, and have even gone mad.  Is 
is 
> possible that Tom Riddle discovered the mirror and saw his family, 
> the way that Harry did?  Only it wasn't a source of comfort to 
> Riddle -- it made him bitter because he didn't want that to be the 
> desire of his heart?  And that he visited the mirror so often that 
> his bitterness turned to insanity?

But then how come LV & Quirrell had difficulty in working the mirror 
in the end of PS? I recall Quirrell asking Harry what he sees in the 
mirror.

And if the mirror caused Riddle's madness, why wouldn't DD have it 
destroyed? At the very least, he wouldn't leave it around Hogwarts. 
I think he intended for Harry to find the mirror and how could DD be 
so sure of Harry's response to the it if it had turned Riddle mad 
before?