From electrostatics, I learned that grounding an object will render it uncharged. However, by combining polarization and induction an object can have a net charge. This is because the electrons will move from a low potential to a high potential (towards the positive parts of the object). I understand why it happens - but then this charge is temporary. As soon as it comes into contact with another object the charges will balance out as there is an excess/shortage of electrons on that object. My question is why do most objects have a tendency to become uncharged? Is it really as simple as saying that electrons are the only moving charges and they will always move towards the positive charges meaning the net charge will become 0 as protons and electrons have the same charge magnitude? Is there a better “physics” way of explaining this tendency?