Here's why:

* Conductors allow electric current to flow easily through them. This is because they have free electrons that can move throughout the material.

* Insulators resist the flow of electric current. They have very few free electrons.

Wires are typically made of materials like copper or aluminum, which are excellent conductors. The reason we use wires to carry electricity is precisely because they allow the flow of electrons from one point to another.

It's important to note: While the wire itself is a conductor, it often has an insulating coating (like plastic or rubber) surrounding it. This insulation prevents the flow of electricity from the wire to anything it touches, which is crucial for safety.