I believe that most of the folks crying to "rip out" this ride would change their opinion if they were to experience Tomorrowland Speedway with young children as you have. Again, at 30 years old, this ride doesn't speak to me as it once did. But I still remember being "that child" who counted down the days to our flight to MCO, with one of the primary drivers for my excitement being a chance to ride Tomorrowland Speedway. Now when I ride this attraction, the excitement level is certainly not there, but the memories still are. I feel like a kid all over again with every twist and turn of the track.
Just because you don't have kids, or because your kids are older and no longer ride this attraction, doesn't mean that others don't appreciate it for what it is.