Real ID - How does this help?

>> Republican politicians argued that the new rules were necessary to thwart terrorists, saying that four of the Sept. 11, 2001, hijackers possessed valid state-issued driver's licenses. "When I get on an airplane and someone shows ID, I'd like to be sure they are who they say they are."

Link: here.

So, I'm sorry I don't see how this matters. Does what their legal name is actually matter that much considering that it still doesn't tell you anything about their patriotic beliefs, or what they're planning to do? Is knowing who they are going to prevent them from completing a suicide bombing? Seriously, if I'm going to kill myself do you think I give a damn that you know my real name??

Grrr...