Further, I think privacy is worth preserving for privacy's sake. We all have a right to it. But there are times where we have to give up rights in order to serve the interests of the community. I know it's not a popular way of thinking in the US, but it's just a fact of living in a society with other people. We don't have the complete freedom to do anything and everything we want. Giving up the privacy of 911 calls has clear benefits, and I haven't yet seen sufficient evidence that enough harm is caused by them being public to consider otherwise.
Even further, these states aren't making these records private for privacy reasons. You're just playing into their narrative and defending them on morality when they're doing it to cover their asses.
Calls before the caller died often make the news, personally I don’t want to be remembered that way and I doubt most of them want those moments made public. Often, 911 callers are in situations they would like to keep private and outside of criminals cases it seems unlikely for significant public benefit to occur should they generally be made so.
Sure, you can get the details on 911 calls made from the World Trade Center on 9/11 here: http://thememoryhole2.org/blog/911-911-calls But, why must this be public info?