What Will The World Looks Like After 50 Years?

I think the world after 50 years from now will looks like flying car all over the sky, the skyscrapers are build higher than it is now, on the zebra crossing, the human and robots walked together. For my, the way that I look at the future is almost positive, but somehow, there will be some negatives; for example, in the future there will be more unpredictable or unknown disease which might causes most or all of the human on Earth died within few weeks, and this situation sounds like the movie "Resident Evil". There is still some other possibilities of the world being destroy by us indirectly: the robots that we have create after few years, might rebel, kill us all, and take over the whole world; the apes that have been injecting the medication of curing the Alzheimer patient may start to rebel, too, and also take over the world. At last, my final statement that I'm going to make is that I believe in what I believe, and I believe that our future will be great!!!!