Probably something weird like robot/people marriages or something
Hey, just for the record, I'm 60 and have been for the legalization of cannabis since the 70's😂
It's gonna be something involving VR. Like idk, future generations will grow up with VR being a normal thing and people will start living out sick fantasies in VR such as being a serial killer or a rapist or something and there will be a whole new debate between the youth going "Calm down old people, it's not real and besides everyone's doing it" and us being like "DAGNABIT, the VR these days is going too far yadda yadda, corrupting our youth, making it too lazy and disinterested, kids are too young when they start VR-ing" and so on.
EDIT: OH! People marrying their waifus/husbandos in VR, living their lives in VR, the VR being the new marijuana debate etc.
I'm already conservative about autonomous vehicles. Trains I'm fine with, because they have a relatively finite path, and all they really need to worry about are stopping, going, and gauging speed based on wind resistance, curves on the rails, and potential obstacles, while cars, planes, and boats have a lot more to worry about.
Direct two way brain computer interfaces
That AIs deserve human rights.
In my opinion, the next generation would be incredibly foolish to treat AIs like humans, unless they could prove scientifically beyond any doubt that the AIs were conscious. This would probably require a scientific understanding of consciousness which also accounts for the hard problem of consciousness.
I'm worried that future generations will resort to emotional arguments for giving AIs human rights. It's a well-known human weak spot to become attached to things that might seem sentient, but are not necessarily so.
No Karen I dont care what the other kids do, you will not grow a reptilian tail.
"Back in the old days, we wouldn't have just plugged our brains into the internet while our grandparents were trying to lecture us about the old days! We had the decency to only glance down at our phones every so often to see if something really important had happened!"
*unplugs* "Uuuggghhh, and what is a phone, Grandpa?"
"It's the same goddang watchajigger ya got in yer parietal lobe! We carried em in our pockets and we liked it that way!"
Renewable energy & recycling.
Most young people understand how fossil fuel consumption and waste culture are affecting our planet. In the future, I can see them being very conservative on wasting little, and having severe sanctions on waste materials.
Eating meat I reckon. That's going to become harder and harder as water becomes more of a commodity.
Um there is a tumblr thing called age fluid which is old men who think they are little girls.
I don't like touchscreen computer interfaces popping up everywhere, getting in between me and the thing I want. Then they put a plastic shroud over all the glorious mechanical internals and try to make it look like a computer does it all. Usually a lever or a button is faster and more pleasurable and I enjoy seeing moving parts. Analog or die!