Well, she rarely ever complains about me not understanding her, otherwise I would have worn hearing aids around the house more often already. And mind you, I do wear hearing aids when watching TV or listen to or play music, so it’s not like I don’t. But I don’t need them to have a normal conversation with my wife. I also don’t need to wear them when I read or surf the internet. Of course if I already have them on for watching TV, I wouldn’t just take them off because I’m done watching TV. But like, in the morning when I wake up, putting hearing aids on wouldn’t be the first thing I’d do. I can eat breakfast and talk with my wife, and go online, etc, without them. Then when I want to wear them to watch TV or for music, that’s when I’d put them on.
The whole point is that I’m not scared about having dementia just because I don’t wear hearing aids all day long. Whenever I need to hear well, I put them on. So it’s always available for me when I need good access to sounds. My point is that if I have a lazy day of just reading, or doing activities around the house or the backyard where I don’t need clear access to sounds (sometimes yardwork machineries can be too loud as well), I’m not worried that I’d develop dementia just because I don’t constantly have access to sounds that I don’t care to hear. As long as I have access to sounds that I care to hear when I want to hear them, I think I can keep my mind sharp enough.
Another point I want to make is that it depends on the language of the speech. The English language has a lot of dependency on the high frequency sounds, like the fricatives, in order to have good word recognition. My wife and I don’t conversate in English, and our own native language is not highly dependent on high frequency speech components at all, like the English language is. So that’s probably why I can get by understanding what she says much more easily than if she would be speaking English to me 100% of the time. Anything not clear from her, I can guess pretty easily thanks to us speaking in our non-English native language.