I haven't gone back to read posts you've made in this forum, so I may be going out on a limb here.As far as those of you enjoy chatting and having the hobby that is all good, no disrepsect, I just don't see it for me. But fortunately we are all different.
Why do you come to this forum, read messages about scanners, and occasionally post messages of your own? I guessing it's because you want to be part of a community that has interests similar to yours.
That's what you will find on many local 2m or 440 repeater and on certain frequencies in the HF bands. These communities spring up, attract participants, and evolve over time as the participants or the subjects change. The conversations may not interest you (and I can't blame you if all you hear is guys talking about their health problems), but it must interest the participants in those communities because they continue to exist.
Yes, they could just as easily call their buddies on the telephone. And, yes, they could probably set up a conference call. But it would still be a closed, private conversation. On the radio, however, the conversation contributes to the community and other people, some of whom you may not know are around, have the opportunity to jump into the conversation.