Everyone wants to live forever, and everyone wants to be blessed of God, but not according to God's terms.
That is the very purpose of the gospel, to give instruction, to point to the One who is the source of living forever, the One who reconciles sinners to Himself because it is His desire to do so (and that is his term: that His salvation is OF Himself, not the filthy rags of self-righteousness that fallen man has to offer).
And the proof of man's fallen state is manifold.
The Preacher himself is proof of this, as he desired pleasures and riches, wisdom and power, apart from God, and learned to his chagrin that this is not possible.
Mankind's religious history is proof of this, as we now see in our time the many altars that paganism have built to the gods that they have made up, and from where they offered their many pointless and stained animal and human sacrifices to their god/s in the hope of attaining life, and of blessings and abundance on this earth for their tribe/s.
Israel's own history is proof of this.
God created His national people out of one man whom He called out from among the heathen, and through the loins of this one man created a nation that had fallen under bondage to the world (Egypt).
He sent His redemption, in Moses, and revealed Himself to them, giving them His Name, Jehovah, yet that nation's history is a repetition of constant falling away, and restoration, falling away, rebellion, and restoration, until finally they crucified Jehovah in the flesh, and even now continously reaps the fruits of their rebellion.
The history of the New Testament church is proof of this.
As Jehovah God, in Christ, chose 12, taught these 12, and gave them the doctrines that He heard from His own father, and commanded these 12 to go to all the nations, yet these 12 sat at Jerusalem, until He had to send them Saul, whom He turned into Paul, and whom He used to spread His Name among the Gentiles, the nations.
Yet after these 12 have gone back to be with their Lord, the Doctrines once delivered to the saints have been so polluted, so contorted, and so watered down, that it is hardly recognizable from the doctrines once delivered to the saints, and once again the Absolute Sovereignty of God in all things, from Creation to the Salvation of His people, is relegated to lip-service status.
Our own contemporary history is proof of this, as wars have become fiercer, more impersonal, and excused with the phrase "the interest of the people".
As we see in our midst the rise of many "teachers" who have no fear in publishing their own thoughts about what Scripture says and call these thoughts pure doctrines, and all others who disagree as heretics, and as we look around and marvel at the so many congregations and aggrupations who pride themselves in their fellowships and numbers, tooting their own horns, instead of allowing the true Owner to invite them to His table.
And outside of that "world" you have atheists, pagans, more witches, who trample on their Creator like they could get away with it.
True, everybody desires life, and blessings, according to their terms, even the "elect", and that only magnifies grace all the more, and points to God as Love, in Person.