While it is true no one can know the exact day or hour, Jesus did tell us SIGNS to watch for, that would let us know what to look for, so I would say, look these up and compare them to the modern world…its really that simple imo!!
For instance, Jesus says, during this time frame, men will be boasters, lovers of self, money, power, etc., knowledge will increase greatly in the world, people will travel to and fro frequently, there are many more…I cant think of the exact section of the bible this is in, but it does go into pretty good details about the general time period.
**Jesus continued by saying, Nation shall rise against nation, and kingdom against kingdom, and great earthquakes shall be in divers places, and famines, and pestilences; and fearful sights and great signs shall there be from heaven. And there shall be signs in the sun and in the moon, and in the stars; and upon the earth distress of nations, with perplexity; the sea and the waves roaring; men’s hearts failing them for fear, and for looking after those things which are coming on the earth: for the powers of heaven shall be shaken." (Luke 21 v.10-11, 25-26)
Now, what could cause mens hearts to fail them in fear from seeing ‘things’ coming onto the earth?!
In my personal opinion, I feel it will probably be within 50 years.
If Im wrong though, and the second coming does not happen for many 1000s of years, think about society by that time!!!..would we even recognize it? I dont think so, look at the world just 100 yrs ago compared to today!!! now think of what the world will be like in the year 2114, or even 3114!! Humans may not even be living on the planet earth by then…what would technology look like? I think it would be something we cannot even comprehend today, what if humans by then come up with a way to beat death? Its entirely possible IMO, give our race enough time to evolve and progress, our technology will be absolutely incredible and probably unbelievable!
I just have a feeling God would not let our race get to that advanced of a state.