Consider the acceleration of technology. (See Kurzweil, etcetera). It is literally impossible to imagine what the ‘far’ future might be like.
By about year 2025, something comparable to our laptop will be as intelligent as a human. At this time, supercomputers will be even more intelligent. In our century, the 2000s, computers will become vastly more intelligent than our entire human species put together. The only way for humans to keep up, is for humans to use technology to enhance our brain, whether by implanting hardware, wetware, or genetic modification. In sum, by the end of this century, by the 2100s, a single human then will be more intelligent than our entire human species today put together.
Well, when I started to study Computer Science people said pretty similar things. They said "In 10 years computers will be as intelligent as a human". I had a good biology teacher at school and just thought "guys you have no idea how the human brain works"
Well this was 1990. Then came 2000 and people uttered the same "in 10 years", then came 2010. And now its 2015.
Computers got faster a lot, they have a lot more memory. But also our knowledge about the human brain has improved, and we now know that this thing is several orders of magnitude more complex than we thought it was in 1990.
You have no idea how crazy that stuff between your ears is.
And IMO there was far less progress during the last 10 years than say from 1995 to 2005. Basically after the Car Phone and the Sega Gamegear was merged into something we call "Smartphone" today not much interesting stuff has happened. The first thing is a technology from 1946 and the second one from 1990.
And if you would have asked a person from 1970 or 1980 how our future would look like in 2015, they would have imagined something much more advanced than what we have to day.
Well, I think "Back To the Future" is a pretty nice example.
We as human beings always think the time we live in is the most interesting (or the most depraved, or the most dangerous whatever). This is a trick our brain plays to us.
We always think how the people dressed during other times is weird, their culture is weird and everything about them is weird, or we think the olden times where much better because morality and stuff.
The truth IMO is, that basically all times are pretty similar, since humans stayed the same. We may have different toys than our ancestors have, and we may live a little longer (also the rise of life expectancy is also not a linear thing) but in the end there is nothing new.
Bottom line: You can make up anything about the future as you want it too be. It is just a matter of suspension of disbelief for your audience.