The word “so” in John 3:16 means that Jesus would be lifted up like the bronze serpent in Numbers 21, become the embodiment of sin for us and die willingly with our sins blamed on Him as the sacrifice for our sins, so that whoever believes in Him will not perish but have everlasting life.
The empty way of life offers much, but in the end is futile. Christ has bought us back from this emptiness with His sacrifice on the cross and has given our lives meaning. There is much to do while we are here. There is much to look forward to in heaven.