BeeDeeDubbleU - 8:13 am on Feb 5, 2010 (gmt 0)
At the risk of being pedantic, I suspect the Quick reply is for replying quickly - so the fancy formatting is not required.
OK, I just posted this using the quick reply. For the quote above I had to type in the quote tags long hand. If I had a button to do this wouldn't this be quicker? (It would in my logic.)