The answer to 'switch hot to touch' is that a switch that is hot to the touch is a sign of an electrical problem that requires immediate attention. This can be caused by a faulty switch, loose wiring, or an overloaded circuit. A hot switch is a fire hazard and should be addressed promptly.
If a switch in your home is hot to the touch, first turn off power to that circuit at the circuit breaker. Then, carefully inspect the switch for any visible signs of damage or wear. If the switch appears to be in good condition, the issue may be with the wiring or an overloaded circuit. In this case, it's best to call a licensed electrician to diagnose and repair the problem.