Christian eschatology (the study of the 'last times') argues that Jesus will return, this time in triumph and glory, to vindicate those who are saved and judge those who are not. It has been a lively source of speculation by theologians for 2,000 years, with many predictions of it's imminence, all wrong.

I think its takes a bold believer to posit that Jesus will return at such and such a date, though I am sympathetic. Consider the peasant in Europe in the midst of the Black Plague, with almost 40% of the population wiped out. That must have seemed like the end of the world to many.

I returned to the faith of my youth with my mind fully functioning - eyes wide open - if you like. There is an intellectual component to Christianity and an entirely faith-based one. Eschatology has always interested me and I too, have studied the prevailing circumstances of the world for potential signs. But it is God the Father who will decide the time and place, even if we are urged to watch and be ready.

Nevertheless, there are certain conditions in the modern age that put us within the boundaries of the predictive cricket ground of end times. Many of these are the result of human-generated factors that could lead to an apocalypse, unlike at any time in the past. The invention, use of and continued deployment of nuclear weapons is a unique event in human history, sufficient to wipe out all (or most) life on Earth. The degrading of the environment  and global warming also present existential threats that may lead to disasters and suffering on a massive scale. The rampant and often insufficiently unregulated development and deployment of technology that may get out of hand, or be exploited by bad actors, is another deep cause for concern. AI, nano bots and so forth all have both wonderful and potentially cataclysmic applications. 

We appear also to have entered a new age of reckless national aggressions, any of which could spill over into larger conflicts. Taiwan, the Ukraine and Israel are three current flash-points.

But God will decide ultimately, so it is unwise to go too far down this path. It is ceratinly wise, however, to keep your eyes open and your wits about you.