Its interesting to note that all civilisation (I use the term loosely), has arisen during a relatively stable time of earths history, not too hot not too cold, really a very short geological time. Sometimes we have the arrogance to believe that humans are the end of the evolutionary line, were not, just a short branch of evolution that has flourished under a very restrictive era of earths history.
Nearly all species go extinct, eaten, squashed, out competed or change in habitat.
The problem is that humans by their interference are speeding up the process of extinction.
Will we stay around as long as the dinosaurs ? Probably not, were resourceful as a species ,but not that good. In the wings will be some other organism, micro or insect ready to take our place.
Prof : Steven Hawkins- Mellors
Come in she said "I'll give you shelter from the storm "