What if you find yourself in a situation where it isn't the gangstas confronting you, but a bunch of drunken jocks?
All too often, there's a certain population of college students--particularly athletes, though not exclusively--who've grown up shielded by their parents' money and been brought up thinking that the sun shines out their nether orifice, and that anything they do is going to bring them no or negligible consequences. They can be even more dangerous, since a gangsta usually knows what a gun can do, while Mr. Young-Spoiled-&-Stupid just can't believe you'd actually hurt him. (Let's just say I've seen that mentality at work and leave it at that...I ain't admittin' to nothing! )
It's fine to recognize an obvious threat, and be prepared to meet that threat. But focusing on that one set of circumstances to the exclusion of all else can't be good. If you've ascertained that you can carry where you need to without going to the pokey, then cool, strap it on. I'm just hoping you think about different possible scenarios and the fact that justice ain't necessarily blind when it comes to certain classes of people.