Because God did NOT make a mistake giving us 2 ears... 

Auditory intelligence

Each ear sends different signals to the brain that make sound possible, requiring less concentration and making listening easier and more comfortable. 

Two Ears Hear Much Better In Noise

The brain has an the ability to filter out, or suppress, unwanted sound signals making it easier to hear speech in noise which can only happen when both ears are hearing simultaneously.

Localisation

The brain can detect which ear is closer to the source of sound and thus allows us to detect exactly where it came from, up, down and 360° around. One-eared listeners cannot detect this and therefore struggle to detect where sounds come from.

Auditory Deprivation

Studies show prolonged duration of lack of stimulation results in 'auditory deprivation'. i.e. the hearing may never be restored, and we may never be able to provide clarity again. This is a very important consideration for people who withhold from wearing hearing aids or only wear one aid for a prolonged period of time.

No Dead Side

With two ears we can clearly and easily hear sounds coming from both sides. Monaural listeners often have to turn their heads to hear people on their unaided side. This is due to the 'head shadow affect', whereby the size of our head prevents certain frequency sound signals from reaching the opposite ear at the required volume to hear easily. 

Quality Of Life!

The majority of people who have worn both binaural AND monaural fittings report a significant improvement in the quality of their life when wearing two hearing aids.