Yes, because it allows quicker stopping distances than normally possible without ABS. If you're admitting this, then you're negating what you said in your first post (which you should be).
I don't think anyone is arguing that ABS makes you invincible, but it can and does save lives. If not locking up the brakes is the difference between a fender bender and a close call, then it could also be the difference between an undriveable wreck and a fender bender, or a totalled car and just being undriveable, or in this case, a fatal injury or a critical injury.

Even if it does make for faster laps, I could see a lack of ABS making for more exciting racing (as long as the drivers aren't flat-spotting themselves into the pits), by adding that extra degree of skill. That being said, I think it would be interesting to see how many weekend racers at any skill level really prefer one or the other. I certainly appreciate the challenge of infinitely trimming time off of laps, but I don't think that the challenge of not having ABS would make things any more fun or exciting, but more of just a pain in the ass that gets in the way of the real fun and challenge that I would look for in racing. I know one thing road racers don't go for is a car that's powerful enough that they're constantly pedaling the throttle to get it to hook and go straight, like a single digit drag car. I think that extra challenge of pedal modulating is along the same lines.