Fibre has a much larger bandwidth. (Carries more information.)

Fibre has a much lower attenuation.

Fibre is unaffected by electromagnetic interference. (From lightning, nearby electric motors, and similar sources.)

Fibre does not radiate electromagnetic energy.

Fibre is small and light.

Longer cable distances. (Reaching up to 20 times greater distance than Category 6cabling.)

Higher Security (Tapping into cable is easily detected.)