Since every person has 2 ears, it’s a good idea to use 2 hearing aids, one in each ear, so that you can hear sounds coming from both sides of your environment naturally.
It makes sense to hear better with two ears than one, so wearing hearing aids bilaterally provides a multitude of benefits such as:
You can distinguish speech more easily and hear more clearly.
You hear speech better in noisy environments.
It is easier to grasp the direction of sound origin.
The acoustic quality is better and the sound is more natural and fuller.
You no longer need to sit in front when you go somewhere to listen, because the two headsets detect the direction of sound wherever you sit.
However, you can of course also settle for one hearing aid.