Untrue. Before civilization and villages and cities, our hunter-gatherer ancestors worked very little: a couple hours a day obtaining food.
This is false, medieval workers used to work less than we do[0]. We work less than 1800s laborers, but their life conditions was such an aberration that it gave rise to the socialist movement, mass strikes and bloody revolution attempts, which in turn forced governments and capitalists to reduce the average labor time.
[0]: https://groups.csail.mit.edu/mac/users/rauch/worktime/hours_...
The industrial capitalists also discovered that a 40-hour week increased weekly factory output.
Henry Ford instituted a 40 hour week (down from 48) to simultaneously improve productivity and increase the demand for transportation (to food, shopping, and leisure locations.)
He also raised wages in the hopes that workers would buy more cars and spend more to stimulate the economy - and demand for cars.
Given the sheer size of the universe, I'd guess the opposite. Unless you literally mean and exact copy.
Never in the history of the world have people had to work fewer hours per week. Something's telling me that we are not any happier than previous generations. We are definitely going to keep reducing the work hours further, and perhaps we will in fact reach the point of no work at all - but will we be happier than today? Just look at all the people who retire and decline quickly.
There's something about work that's natural to the concept of human race, and I, for one, would continue to work even if I didn't have to. But - and that's a big but - I enjoy my work. It allows me to use my brain and express myself in ways that I never would be able to without the support of my team and my company. It multiplies my ability to make an impact on others and to see a meaning in waking up every morning.
This is not going to be a popular opinion, but everyone here has the ability to find themselves in a position of fulfilling work. In my case, it took 20 years of hard work, of which the first year was awful and it gradually got better, leading to where I am today. I don't think I possess any special qualities, and I certainly didn't come from money or any type of privilege (I wasn't even born in the US). But I was willing to work my ass off, and it all paid off.
Assuming you come from a similar background as mine, you cannot escape work. Think of it as a prison sentence of anywhere from 1-20 years. You're in jail now, and you can't get out of it - what do you do? Sit in a corner and feel sorry for yourself, or try to have meaningful connections with your jail mates, exercise your body, read books, learn something new every day. I know which way I would go.
Inequality is at the very core of how the universe operates. We all have different genes, and some of us are stronger, taller, cuter, and/or healthier than others. Some of us are dealt good cards and some are dealt bad ones. Heck, some of us are born on Earth, and there might be other species born on another planet, dealing with a very different climate other circumstances - it's highly unlikely that there's another carbon copy of our planet.
Life is different for everyone, and if you spend your life looking at someone who has to work less, you're going to miss the essence of this universe. From what you wrote, your life will have a heavy dose of work associated with it, and that makes it similar to mine. It's ok, there's a lot of pride, joy and fun to be had. It all starts with realizing that it's about living your best life and not someone else's.