Running without using running shoes was a craze which commenced about 10 years ago and lasted a couple of years. It started to be quite popular but faded away just as fast as it emerged. It had been dependant upon the theory that running shoes may not be good for you and that running with out them is more natural and more effective for runners. There have been a lot of books written and published about this, lots of websites promoting the promises and plenty of social media activity professing the presumed benefits. However, what happened is that the benefits that were supposed for it didn't worked out for almost all runners who took it up and there turned out to be a quite high injury rate in runners who tried it out. Athletes rapidly went back to what they were familiar with and all of the guru’s whom started out promoting barefoot running aren't heard from.
There was no scientific data that barefoot running was really any better. It had been largely made up promises based on anecdotes. As soon as the scientific research got carried out it showed that many of the promises that got made up for this were just that, made up. The benefits over using running shoes are not there. Barefoot running is simply different to running in shoes. Since the barefoot novelty died off, there was a move to a lot more very cushioned running shoes. It was the contrary to the gimmick of barefoot and it too got termed as a fad. Except, at this time you won't notice any indication of that trend to the higher padded running shoes dropping off, therefore it is probably pretty sure that its not simply a fad but a long lasting trend. Running barefoot or with conventional running shoes or with maximum cushioned running shoes are just distinct. One is not better than the other and individual athletes could have their own tastes as to what they prefer to run in and that's alright.