Except for commercial flights (which I would easily give up for a hopeful society), I do not find anything on your list remotely relevant to my happiness or well-being.
Imported cheap goods are obviously something all of us consume a lot, but we only need them to feel good in comparison to our neighbours.
As long as we keep them for hospitals and medicine, the rest going away would be just fine. Children would play with whatever they can find instead of cheap plastic toys, we would have to learn to multi-purpose our tools instead of having a specific object for every minor purpose.
Comparing middle income 1st world citizens to dragons on their mountains of gold is disingenuous at best.
Those two groups are on the greater side of the inequality, and the third group is on the lesser side of the inequality. All the dragons on their mountains of gold can stop existing, and the inequality barely changes.
Avicebron brought up inequality as the root cause.
DavidPiper indicated only the few thousand richest as the root cause.
Rayiner questioned if those few thousand richest have the means or capacity to reduce inequality.
estimator7292 responded that everyone has to help reduce inequality.
To which I wanted to point out exactly what would need to be sacrificed, because it would involve sacrifices among the top 10% to 20% of the world (constituting many on this forum) which those 10% to 20% would not even consider a "luxury". It is easy to claim a billionaire's private jet is an expendable luxury exacerbating inequality, but the reality is the bar is far lower than that (see statistics on energy used per capita, which can serve as a good proxy for which side of the inequality the lifestyle you might expect is).
That is why we are all mostly talk and no walk, because push comes to shove, we can't even get a sufficient fossil fuel tax passed to slow climate change for our own descendants, much less voluntarily decrease our standard of living solely for the benefit of others in the world.