Even though all the signs for moshiach have passed – the fact that he is not here leaves just 1-2 things left before he comes. Which I’m going to go out and guess is that Hashem is doing 2 things – waiting for all the pieces to be set and/or giving us the maximum amount of time possible for us to do tshuva before our time runs out – which is actually the year 6000. So all those people who think moshiach is coming “soon” don’t realize that even their children may not see moshiach in their lifetimes. Our grandchildren…might live to see that time. “Soon” is just relative to 5772 years of waiting and only have <250 years left. AND even then, if after 6000 years moshiach does not come we are still required to come. We only make an assumption that each day of creation was equal to 1000 years, we are not 100% positive, it could be 10,000 or 100,000 or who knows.
Just like Z pointed out – even after all the signs have passed, there have been many wars, tons of instability and so on. Do you really think that it’s impossible that ww3 happens, moshiach does not come, 100 years later ww4 happens, moshiach STILL doesn’t come, ww5 happens – moshiach comes. That is a totally realistic scenario… The gemara says that jews will have nowhere to go for safety just before moshiach and even though things are bad now, most countries tolerate jews. Even america is supposedly supposed to turn on jews like in germany, things don’t seem to be as bad as they probably should be before moshiach. Don’t get me wrong – things are bad but in ww2 – they were a lot worse then now.