I trained with grandmaster chang sik lee for 6 years, and then with ursula cui for 2 years. I made it to black belt. I see all my taekwondo buddies lose fights. When i got in a fight 2 years ago, i kicked a kid in the stomach, and he dropped to the ground crying. The next day, he told me that in the morning, he woke up choking on his blood. Sure taekwondo was kinda useful, but yet, i saw a kid that wrestled for only 2 years, kicked some other kids butt BAD... I think grappling is the most useful in a street fight. Is that true?