Ham radio allows the public to use slices of the radio spectrum.
If someone wanted to "hack" on RF projects, what should this person do if the entire spectrum was given to companies and governments + militaries instead?
If you are arguing against ham radio you are basically arguing against hacking, tinkering and experimenting.
FWIW I think repealing the symbol rate restrictions and opening up bands a bit more would go a long way towards the spirit that ham was started with. The hobby seems pretty ossified these days and it would be great to see more advancements in digital modes and stuff closer to the state of the art.
Re disaster support: complete and utter LARP to an embarrassing degree. I've been familiar with a variety of clubs all my life through participating family members and this simply doesn't happen in a way that has any practical benefit to anyone. Again, opening it up would improve disaster comms quality by incentivizing development of better protocols and by getting access to those methods out of the hands of the unqualified gatekeepers of clubs.
Hams are weird, but at least they're hurting anyone. Theres a good argument to be made that HF trading should be banned.
For example surfing is “pointless” and leads to a lot of plastic waste but… it leads to health benefits, better swimming skills and a chance to socialise.
Aside from the useful thing they provide, what useful thing do they provide?
We are only nine meals from anarchy. More modernly, we are only 4 technologies away from the Internet. Wired, wifi, cellular, satellite. If those get overwhelmed, which they easily do when stressed, we need to have fallbacks in place for communication. You're right that things are evolving add technology improves, but the hobby has also evolved. Morse code is no longer a requirement, for example.
Open radio spectrum is a natural resource like any other. It is indeed about as commercially useful as a field, a tree, or a patch of blue sky.
Sure, there are people for whom it's a fun activity, but I'm sure there's plenty of people who also enjoy hard drugs, setting fire to stuff and watching it burn, watching child pornography, joyriding, making bombs or have a fetish for nakedness / sexual activity in public, and we forbid all of those, for very good reasons. Is it one of these things that have always been allowed, and is too politically entrenched to change now?
Outside of the fun aspect, the only actual use for ham radios I can think of is providing emergency communications, particularly during extreme weather events that affect the functioning of cell towers and such. I agree that there should be some frequencies reserved for such use, but that use-case alone requires far fewer of them than ham radio operators can now enjoy, especially if we'd be willing to switch to low-bandwidth digital or even textual protocols.
I can see the use for hams during the early days of radio, and there were things that you just couldn't achieve any other way before the internet and mobile phones existed, but those days are over.
Maybe we could even leave a band or two for the hobbyists, but I feel like there should be a much better use for most of that spectrum. I don't know if high-frequency trading is a good use, but I don't think ham radio is much better.