But a lot of people don't have to work now, which would not have been possible before. And I doubt anyone lived off of dividends in 1700 for example.
I would guess that in a few hundred years, "money" would essentially be a bunch of stocks, which would be tokens, or "altcoins", if you will, of DACs, since robots would run companies much more efficiently than humans can, pretty much all the big companies are DACs, and every single human being at that time would have to have some ownership of one or a few of these DACs to live. Probably those who don't will get weeded out, and the people that are left at that time would all essentially live like multi billionaires without ever having to work.
I'm afraid that you are far from understanding the human nature. Those multi-billionaires turn out to be working even harder than most of the populace out there, they are just free in their choice. You can live off your dividends (or whatever), but this doesn't in the least mean that you won't work. Decent capital simply allows you to choose what suits your interests best.
You just stop working for money only.
Yes, there are rich people who continue to work because they are workaholics. But there are also rich people that don't work, other than to make sure their portfolios are well diversified and making money. I personally know a few. In the far future, everyone would be in a position where they only need to manage their portfolios. If some still choose to work, that's their prerogative, but because of abundance, there would be no need to work for the average person in the far future.
I'm not sure what your ad hominem attack was meant for, but it didn't take away from my point in the slightest. As you say, people will stop working for money. I agree. That contradicts with your earlier statement that whether in 100 or 1000 years, people will still have to work hard to make a decent living.