Horribly mistaken idea. Printing did not arrive in Europe until the 14th century - any books were written by hand, the books in England numbered in the hundreds, and 'education' such as it was was reserved for the super-rich. People died young, and simple treatments for ailments and diseases did not exist. Superstition permeated all aspects of existence for the vast majority of people. Life was cruel, difficult and short.
I'm happy I had the indescribable luck to be born in a time and a place which doesn't really really suck.
I suppose it depends what you want out of life, tbh. In the 10th century or so you didn't need education, not in the way you need it now. You tended your land, paid your taxes and tried to survive. Unless you were a member of the upper classes, of course.
However, after many years working in IT and seeing the state of this planet on the news every day. Murder, rape terrorism, global warming, etc. etc. sometimes I think it would be great to go back to those times.
Sure it would be a tough life, but also a very condensed outlook. You're worries would be whether your livestock had adequate grazing, whether your crops grew and how you would cope if you broke a leg. Apart from that, not much would touch you. You'de get a bit of gossip now and again from the travelling merchants. Now and a gain the fayre would come and there would be a religeous holiday, time to let your hair down a bit perhaps.
In some ways, it's a much more peaceful life than nowadays.
Could I live like that? Hmmm, not sure. I'm conditioned to live with modern conveniences. I expect to have the TV, the radio, travel, holidays, computer games, printing, mass production, supermarkets, etc. etc.
If I was dropped back there now, I'd find it incredibly hard to survive. The isolation would drive me bonkers. No one different to talk to for weeks on end. Not much to look forward to. Meagre meals. backbreaking work.
However, if I had been born into that time, I'd know no better. You cannot miss what you do not comprehend. The peasant on a 10th century plot wouldn't miss the playstation, or the internet, or a car or train or bus. He may wish to better himself, but those aims would be a bit more land, another cow, a couple of chickens. Now we aim for a bigger car, a faster computer, the latest games, holidays abroad, whatever.
I don't think we live in the best possible time, but neither do I think that there have been many times (relative) that have been much worse. The wars would be hard, so many loved ones lost, and there have been plenty of wars to avoid, but apart from that, during those times that this country has been fairly free from the direct affect of wars, I'd say life has not been bad, in many respects.