Becauase they are high and tend to have long flat front hoods, creating an extended blind spot for short objects (like children) in front.
Newer models have forward collision sensors that partially mitigate that. (And backup cameras that do an even better job of mitigating the rear low-height blind spot, as long as people use them instead of direct vision when backing up.)
Newer models have forward collision sensors that partially mitigate that. (And backup cameras that do an even better job of mitigating the rear low-height blind spot, as long as people use them instead of direct vision when backing up.)