I expect very very useful, easy to use and practical AIs in the early 2040s or even in the late 2030s. I don't expect "climate doom" happening at all, not even in a million years. Climate will get 1 or 2 ℃ hotter than in 2023, but we will manage. Better than today, with nearly everyone having air conditioning in their house.
However, the problem is that with being older there are more responsibilities, more health problems and also, the worlds of the future (or the present) has different problems than in the past. In the 2000s I thought 'let's just get trough this terrible decade to the 2010s when life will start being decent'. In the 2010 I thought 'let's just get trough this terrible decade to the 2020s when life will start being decent'. In the 2020s I think similarly about the 2030s. I wonder if I will be wrong again or I will be correct this third time. It is not impossible to be correct the 3rd time, because economical and technological progress does happen. 10x performance/price and 10x performance/watt in computers every 10 years does mean 1000x in 30 years which is what some very optimistic futurists expected from 10 years. So it does seem likely that the 2030s will be significantly better than the 2000s which had their own problems I remember, but I was younger then with less responsibilities and less health problems.
The 2030s will be hotter but richer, a bit healthier and with better computers, much better AIs and electric autonomous or semi-autonomous vehicles. So they will be different. AR and VR will probably suck before the late 2030s or early 2040s. However, they will continue getting exponentially better. I expect 3% GDP per capita and 17% computing/constant price growth in the 2020s. 5% GDP per capita and 26% computing/constant price in the 2030s. AGI will get invented in the 2030s, but will not become superintelligence immediately, it will take at least a decade for that. Life is going to get better on the average, on the whole in most places of Earth. In the 2030s there will be outposts on the Moon and on Mars, each housing at least a dozen of people of all races and genders. There will be also a separate commercial space station around the Earth in the 2030s. There may be a space station around Moon or Mars by 2043. By 2050 there might be 1000 people living on Mars, but certainly not 1 000 000. That can happen by 2080 I think. 30 years later than Elon Musk wishes.
Half of current FutureTimeline userbase is going to be alive in the year 2123 in my opinion. Not because of a single big invention, but because of a plethora of smaller improvements in medicine, health, fitness, food, drinks, living standards and safety.
Earlier this year, I read a university research paper, explaining that:
▹ in the 13th century, in England, there were usually as many as 200 murders per 1 million citizens
▹ in the 17th century, in England, there were usually as many as 100 murders per 1 million citizens
▹ in the 1850s, in England, there were around 30 murders per 1 million citizens
▹ in the 1890s, in England, there were around 10 murders per 1 million citizens
▹ in the year 2017 (it changes year to year), in England, there was only 0.16 murder per 1 million citizens
This clearly shows, that most countries today are much, much (hundreds of times) safer than they were in the 17th century. Excluding or including war, doesn't change that. The world started getting visibly safer in the 18th century and that on average continues to this day.
Global economy doubles in product every 15-20 years. Computer performance at a constant price doubles nowadays every 4 years on average. Livestock-as-food will globally stop being a thing by ~2050 (precision fermentation and more). Human stupidity, pride and depravity are the biggest problems of our world.