Why parallel circuits are used for house lights?

bcz when we connect the circuit in series then- -the voltage divides, therefore all the appliances do not wrk properly -in series if one appliance is switched off then all the other appliances also gets switched off i.e.u should have diff. switch off n on key.. this is d reason y we prefer parallel connection so that if 1 appliance doesn't wrk properly then all the connections do not get affectd