Why do I have little buttons on my receptacles in my bathroom?

These are called “ground fault” interrupters and offer additional protection if an electrical appliance comes in contact with water. You may also have ground fault breakers in your service panel. These devices are there to protect you from electrocution and should never be replaced with standard receptacles or breakers. You should have ground fault interrupters on any electrical receptical within 6’ of a sink or a tub. On a related note, never use electrical appliences if you are in contact with water.