My dad recently went to the doctor for his hearing and ended up getting a hearing aid. We had joked for a few years that he needed one - but were kind of surprised when it turns out he actually did.
He told all of his friends and family about how much his hearing and in turn day-to-day life has improved since getting them. Two of my uncles and one of his friends got their ears checked and ended up getting hearing aids as well.
I believe it when I read that 1 in 5 people need one. Goodluck to the SoundFocus team!