Non-synthetic meat. Only thought of this while I was eating a steak for dinner but can imagine a time when it wouldn't come from killing an animal.
Economics and gastronomics might see synthetic rule the roost (if I can grow a slab of unexercised and thus super tender steak with no fat lines other than those I want and certainly no gristly bits the size of the table for less money/space/time/pollution/slaughter issues/transport issues than even factory farming a cow that would produce less meat in total then yeah).
Tradition, religious exceptions (I can see a path for many already and much is already tolerated on such a basis) and general lack of power from the vegan and whatnot lobby to effect such a law (outside change environmental set gets a look in if cows = methane, though it is not necessarily that simple as the ability for cows/sheep/horses/pigs/[insert rest of old mac donald nursery rhyme] to reclaim land and manage it is considerable) means outright illegal is a harder sell.
Literally nothing that's said in this thread.
You don't envisage a future where
AI driving takes over from people*
"we are the only ones allowed to fix this because safety/[insert fearmongering of choice]" becomes the standard (it already is in a lot of things, or is so difficult as to functionally be that -- if nothing else see the average building permit setup and wonder if your grandfather would have had to do the same for the same job?)
a ban on tobacco happens (we have known it is awful for you for well over a century at this point, taxes keep getting higher, ages keep getting higher, restrictions keep getting greater in scope, incentives to not/to stop keep getting increased, costs of insurance if you do keep getting more, youth rates seem to be falling... a ban seems well within reason once enough of the old ones stop/die, and even more so if the take a pill and you will stop)
various types of vehicles because omissions (there are many places with limits already, and the reason the UK gets all the nice old Japanese left hand drive cars for nothing is because they become worthless there after a few years when they will never pass emissions regs).
governments trying to restrict what essentially anybody able to attach a file to an email can make from more than shit tier plastic (as it stands today $5000 would probably get me enough CNC machines, which are not the hardest things in the world to operate, to make some very nice firearms, indeed
https://www.bitchute.com/video/ddLJ7uqJynwL/ and the rest of that series should probably serve to illustrate quite a bit there)
or a few other things along those lines.
There are those in this thread that seem to want to gripe about the state of freedom of speech, freedom of expression, freedom of association, freedom to do what you like and other things usually bundled with those (all under attack, and have been from various parties for decades now), the prevalence of the "as a service" model, and those that like to ponder their favourite dystopian science fiction more than might have been ideal. However there do seem to be several things posited thus far that seem eminently plausible even in an "ideal" future without some wackadoodle types coming into power and stomping all over rights in the name of their particular beliefs.
*between insurance rates, cost of what would then/soon be vintage cars, speed issues (AI driving knowing exactly what every other car to the horizon is doing can result in some serious ballet type sequences to outside observers, see also
warehouse robots, which human manual control would make thousands of times less efficient at best), fuel issues, aggravations with getting/renewing a driving permit it will probably be de facto illegal, maybe resembling automatic fire guns today in the US (nothing made after, nothing imported after, has to be on our registry, and wouldn't you know the key part we are calling the fundamentals of this happens to be a consumable...).