Like I said - ELECTRICITY is not a necessity, let alone any kind of radio.
Long range radio comms can be a tremendously helpful tool and also an entertaining hobby. One night I spent some of my off-watch talking to a cruiser in Central America headed north while we were headed south going past Solomon's Isand MD. I heard all kinds of fun stories about Costa Rica and he got some local info about the Bay for his future arrival. I was also the only one to pick up a Mayday call from Nicaragua from a terrified Grand Banks skipper. Eventually some more local stations were found and the skipper was told "the weather is always like this so deal with it" more or less
The negative side:
Like any tool, you can misuse a radio. You can shoot a goose and eat dinner or shoot your foot and not eat dinner. Not the shotgun's fault
SSB/Ham *can* promote the much discussed "group think" where you surrender your brains to the hive mind and/or go places you would not go otherwise because help is always available or at least you think it is.
Fun radio call to listen in on:
2182 KHz some years ago
XYZ: Mayday Mayday this is XYZ
CG: XYZ, what is the nature of your distress?
XYZ: We are at Lat/Lon and the seas are very rough and the winds are very high. It is very uncomfortable here. Can you tell us where to go for better weather?
CG: You are near the eye of hurricane X. Heavy seas and high wind speeds are common in hurricanes
What exactly is your distress?
XYZ: It is very uncomfortable here.
CG: Understood you are not comfortable. What is your distress?
XYZ: Can you come out and get my wife?
CG: We do not provide that kind of service.
(At this point I am imagining someone going "well we tried, throw her off" )