Is it just me, or do the majority of the pro-rollers seem to be "fake rollers?"
"I want a high powered stat array, but instead of just using a high powered stat array, we're going to roll 30d6, drop the lowest 27 rolls, 18 times, and take the best six results. As a result, everyone in the group will have 18, 18, 18, 18, 18, 17 (for Charisma), except for one guy who will somehow end up with one 15. We will spend the rest of the campaign calling that guy the retard, and he will whine every day for the next two years about the shameful curse laid upon him by the dice gods."
If your DM actually let's you reroll a character that you don't like, then why not just give your character whatever stats you think are appropriate? If you don't take what you roll the first time, then it's no longer a random process. You're just wasting time.