In the end life has no meaning following the big bang theory along with evolution. Eventually all life is going to end at some point (even if it is billions of years down the road). And even if it did not (we start planet hoping, etc), what is the goal? Strictly to survive? Procreation in a sense would provide a purpose, but in the end it will be defeated with time.
In that sense, purpose is what we define it to be.
I guess I also think it's kind of...I don't know, sad? maybe, to have the view that if there's no god, then there's no point to life. Is that the only thing necessary to justify going on living every day? It's almost like saying that everyone who doesn't believe in some higher power should feel driven to just off themselves.
The flipside is eternal life and existence, as promised by various religions. At what point do you get tired of existing? Does it come after the first 500 trillion trillion years, or is it after seeing that many Universes form and die?
No it is not. I can show you how time slows down as you approach the speed of light. This is a real thing with physical effects.
And for any who may doubt this sort of thing, your GPS satellites wouldn't work properly if they didn't account for time dilation effects due to their relative speed.
Other fun stuff: Gravity slows down the passage of time.
I don't see time as a human concept either. Our system of measurement exists as a way of quantifying a natural property of the universe. You wouldn't be likely to say that mass doesn't exist, or that distance doesn't exist. They are properties that things in this spacetime have, and we developed ways of measuring these properties.
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