i'd probably agree, if i had a sports car, i probably wouldnt put a computer in it. For my car however, i'm a daily driver.......i put about 20,000 miles on my car every 6 months. Everywhere i go for the most part is at least 40 miles away. So in a single day i normally drive about 120-150 miles. To work, then to my gf's house, then back to my place. With all that driving, and having an automatic the computer makes the ride much more enjoyable.
However if I were to purchase a muscle car, I'd probably just put in a nice sound system.