For example, you might have an increased risk of wood kickback, very nearly lose a leg, and spend years in physical therapy trying to replace the muscle mass that died. (I knew a guy.) Or you might bleed out.
Seriously, a few extra safety features on a table saw can make the difference between life and death. Assuming you don't just disable them.
(I have a cheapish table saw, but one that isn't complete garbage. I treat it with about the same caution I'd treat unexploded ordnance from World War II.)