Actually, funny that the guy posting below you mentioned Wing Chun because I just remembered I took classes on that for 2 years about 5 years ago (only went 1-2 times per week so I wasn't really that dedicated).
What aspect of the 'art' are you talking about? The personal development, inner peace, meditation, self discipline etc? Yeah sure you can learn all that.. but you can do that by going to church too.
Face it, most people go to do martial arts nowdays to "kick ass". If that's what you want to do, might as well accept it - but also accept there's always someone bigger, meaner, better trained, stronger, faster, etc. etc. Then there's always the gun angle.. UFC 123 - (Brock vs Glock) - Brock Lesnar vs 9mm. I'm betting my money on the 9mm.
In my eyes the martial arts is entirely about personal development in every aspect of your life. I can certainly still defend myself if need be even though I haven't been in a kwoon in ages, but the self defense aspect is actually the least beneficial thing that I learned from the martial arts. I do agree that most people begin training so that they can learn to "Kick ass". I was one of them. I'm just saying that in the long run I got a heck of a lot more out of it than just learning how to fight and had a great time while doing it.