My parents, I believe, found this to be easier for everyone in the family, as there were no real HOH groups about much when I was younger. In fact, the only people who had deafness were elderly people usually. In some ways I'm glad they raised me in such an environment, since sometimes my lack of hearing isn't quite as bad as some people have it, but then again - as you say - it would have been nice to be able to relate to someone with the same experiences as I have.
It is something I considered, although most of the time I believe this to be because within our group, there are many sub-groups who are more interested in specific people. If you're not someone they primarily concern themselves with, then they tend to not worry so much about offering advice/support. I guess if I got to know them better again they might, but it is difficult to close in on some people. However, since posting this, one of my friends has actually been incredibly understanding about this and admitted that she had no idea about how bad things could be/have been for me (though she was also rarely with us much). So I have a bit more hope now that it's a case of just not being aware.
I usually don't need that level of information, but I agree it would be nice if someone could tell me if there is something I miss - say, for example, an appliance in the house going off to let me know something has finished, and I didn't hear. Or if someone was knocking on the door and I didn't hear. Similarly, in a club environment there may be things I can't see/hear happening.
Something else I just thought I'd note is that there are times when I do enjoy the 'hearing' environment - clubs, festivals and concerts. Obviously my enjoyment is dependent on having someone there who is aware of my problems, but generally speaking this hasn't been a problem before until I was either a) with people who weren't fully aware of what I required of them, or b) having to deal with additional obstacles [to take the instance of the festival I recently attended into account] which made the experience more stressful than it should have been.