No one ever thinks it will happen in their lifetime....and it may or may not happen in mine. (heck, I could get hit by a bus tomorrow)
But I do believe that we are in the foretold "time of the end"...and I think the signs are getting worse... I personally believe that all the things signs that Jesus foretold (as well as the signs of the last days listed in 2 Tim 3:1-5) are coming true all around us. But that would take, another thread....and probably be a moot argument.
And then there's Peter's statement: "For YOU know this first, that in the last days there will come ridiculers with their ridicule, proceeding according to their own desires and saying: “Where is this promised presence of his? Why, from the day our forefathers fell asleep [in death], all things are continuing exactly as from creation’s beginning.” (2 Pet 3:3, 4)