Things have indeed always been changing, but never at this rate, things are moving ridiculously fast when you zoom out on the timescale.
And people should really look at the bigger picture also from a global and social point of view. Killing off wildlife diversity and over-extracting our limited natural resources in combination with climate change drastically affecting crops and fisheries, it is only a matter of time before these secondary consequences will put too much pressure on the human species as a whole. Drought and natural disasters will lead to hunger and loss of habitat/livelihoods, which in turn will trigger migration and fighting over resources/war. There are just too many of us and the way we are raiding the planet is not sustainable. Pressure is building and I'm convinced our generation will see the lid pop off. Unless if nature finds a way to restore the balance of course (e.g. new airborne Ebola type disease that wipes out 90% of the world's population).