As we know, everything must have a beginning and an end, the Universe began with the Big Bang, and will end billions, even trillions of years from now, with the Big Crunch, or matter isolation. But, there is one thing that cannot have a beginning and an end: Time. Time is infinite backwards and forwards, it did not begin, and it will not end, Time will keep ticking even after our Universe is gone, and Time had existed forever. This brings the question, how did it come to be, how does Time exist without a beginning or an end? Think about it, it'll blow your mind.
Some people (including myself) believe in God, so... y'know.. I don't feel like debating and stuff though, so ima leave it at that :p
If you had training in formal philosophy, time isn't absolute. Nothing in this world or universe is constant. The sun might not rise tomorrow even the past has repeatedly described it rising. 'Forever' must have to start somewhere, or else it would not have been 'forever'. Time is a relative concept created by humans, you know. We must first understand time absolute fully to see if it has an end or not. It is in the realm of the unknowable.
Time is just measurement, an illusion ingraved in our minds ever since man said "Let's make a way to recognize when thensun is there, compared to there.(referring to 2 different spots in the sky)". Time has never existed, or atleast not as we think it does. If it did exist how we thought it does, then time travel and future travel would be possible. Sort of like how people believe in "destinies" or "fates". They are just concepts of man, and illusions if you believe that they are absolutely true.
I made the name up. You weren't supposed to look something up and get the joke. The joke was the dates, bro.
The universes Time is not a constant thing like the beat of a drum, or ticks on a ruler, it slows down when something has a lot of speed or gravity. That's relativity, in simple terms. We just use a pretty arbitrary mean to measure it. Sure you could say our "time" continues backwards before the big bang, but the universe's "time" is connected to space, hence the time space continuum. Kind of off topic, but I wouldn't say fate or destiny is an illusion. The majority of the choices we make, or ones we made in the past always affect us in some way, eventually, whether that be a noticably large effect or a small one. You could say we make our own destiny, rather than one occurring on its own. Theres a difference between rational thinking and taking any thing relating to belief out of consideration.