I'm a bit of a pessimist

Cultures are deteriorating in general as the big, shiny, new globalization and colonization stomp all over the little old cultures that have been developing for hundreds, if not thousands of years. With globalization, we'll continue to infect other cultures until it's all just one big bad collage of mindless pop-culture. I'm sure hundreds of languages went extinct during the colonization of America and the Native American genocide that took place. (Not to mention every other part of their culture that was forced to be forgotten). It's still happening today. Every day that goes by, another Inigenous child forgets about his ancient tribal language learns slang from MTV instead. The problem is we're just now figuring this out. Had we addressed the issue a hundred years ago and realized that brainwashing and exterminating all of these people would be wiping out complete histories, maybe we could have approached things a little differently. For now, all we can really do is document and pay tributes. We gave globalization a mind of it's own and there isn't much we can do to prevent it from happening.