Sink or swim...what's the point

Life flows in a straight stream. Sometimes the current is slow- like a creek in the summer time that remembers that down the path is the way it's supposed to go. There is not much water but the grooves in the sentiment channel the left over winter wash to the river to flow with all the other adjoining creeks. Each creek on the same path, all destined to end up all together
as one.
Then there is the winter rage, the rains and snow all collide into a fast torrent of water and rage. The water moves at it's on flow taking in it each drop of rain and watershed to create a force that burrows down on anything in its path.
It's all water- all heading in the same direction- all ending at the same place.

Life is the same no matter what it all heads in the same direction. The amout of time varies, some people are lucky and get a lifevest, while the rest of bob and tread water the whole way. The intensity varies. The course may vary with curves and twists. But it all ends at the same path.
Is it worth the journey?

The salmon in the end fight the raging currents to travel up stream to lay eggs. Do they know before they travel that they will die at the end of the river? If they knew, I wonder if they would still make death swim upstream.