Obviously, most of us wont be exist to witness this
yes, most of you won't live, but I will live and 'll continue playing video games
Anyway, here's my takes....
- petrol-based engines will be replaced (not sure what with, though), which means that probably the cars will be replaced too
- private property will be abolished (everyone will be free to roam wherever they like, without passports / IDs and without having to report to anyone)
- most taxes and laws will disappear
- the electrical grid will be replaced (again, I've no idea what it will be replaced with, but I feel like it will become obsolete)
- physical money will go (although, I don't think that digital currency will replace it, it's possible that we get rid of all currencies altogether)
- physical prisons will become obsolete (probably other forms of punishment will replace them)
- (sadly for me, as I love cable internet) all internet cables will be replaced by wireless technologies of some sort
- slaughtering animals for meat will (probably not go fully extinct yet, but) will be replaced with other foods that perfectly mimic / replace the meat
- shaving blades will be replaced with shaving foam (you just apply it and the facial hair disappears instantly, I've read this in a SciFi book

)
Most importantly, religions will be gone.
hell yeah! 100%
Most religious, political, financial, and overall enslaving systems will be obsolete and people will be free to do whatever they want, whenever they want, without having to report to anyone (the governments, police, even the law I think will become obsolete because mankind will reach a new level of consciousness that makes them understand that the well being of everyone means the well being of one's self, which will prohibit everyone - on moral grounds - to harm other creatures, sentient or not... and in such levels of consciousness enslaving systems like religions and finances have no place since everyone is morally compelled by their own consciousness to help other beings thrive, which means countries will also disappear, races will not be diving tools either)
The future of mankind is really bright, I can feel it too. We just need to go through this hell we're living in today for few more years (maybe up to 10, I don't know) in order to get rid of these global criminals that love the money, the power and the control over every living soul on this planet. The shareholders, the governments, the CEOs and board directors of the big pharma, big tech, and big military corporations in particular need to go, these are the real terrorist and criminals that keep us shackled and who refuse to give up their powers in order for the entire mankind to thrive.
Whether or not we will make it to experience the birth of a new, improved, and really CIVILIZED society is a different story, but the future is bright for sure. But we have to keep fighting this senseless battle in order to get there, so yeah, most of us will definitely perish during these final battles. But we will get where we belong for sure....