Conveniences don't make life worth living, and a long life doesn't mean a good life. Do you really think people, on average, enjoyed their lives less back then? I don't
There's also a big difference between living in a part of the world where the woods provide a relatively temperate climate. Try living out in the forest to Papua New Guinea with 100% humidity.
By the way, try to make sure you don't accidentally get bitten by a rabid animal because the cure for rabies wasn't invented until the 1880s.