Singing can be a problem as you get the same experience as putting both fingers in your ears and you can hear your voice louder and tend to try to compensate for this.Also when eating the noise of your chewing is louder than the conversation over a meal.More expensive hearing aids have a volume controller which is useful and ways of cutting out peripheral noise,but someone talking to you from behind like a waiter or, waitress you lose the voice completely. My thoughts are that a hearing aid is a useful tool with limitations. You can get involved with conversations that where before you were not included in. Crockery being rattled together,high pitched screaming and laughter of mainly women are painful as they are with people who can hear properly.
Once you get over the initial appearance issue they are well persevering with.
Al