Well, compared to now and what we know of course it would be hard to us. But, back then they had no idea what the future of today would be so honestly I would feel the same as I do now.
Yes, because we live in a society that pushes science to new limits and horizons, and I think that a few years from now our economy may be so advanced that we will communicate by halograms(like Star Trek!!!!!). Haha. But seriously, yes it will keep advancing because look at the difference between today and five years ago. It will be the same. Science will never end.
Yes and no....sometimes we push a little too much and cause damage to our planet and environment but we need the inventions that we have created in order to live the lives we're accustomed to.