How long would you estimate the human race will live on for untill it becomes exstinct?

Question: How long would you estimate the human race will live on for untill it becomes exstinct?
- Keywords:
  estimate,
  extinct,
  human race
Asked by anon-174280 to Alex on 15 Jun 2018. This question was also asked by anon-174313.
- Alex Seeney answered on 15 Jun 2018:
  
  I don’t know the exact answer, but last year, Stephen Hawking suggested that we would need to find another place to colonise within 100 years if the human race is to keep on going – “It will be difficult enough to avoid disaster on planet Earth in the next hundred years, let alone the next thousand, or million”.

Question: How long would you estimate the human race will live on for untill it becomes exstinct?