God made us.
God also made us a perfect place.
A place without sin. A place He could be.
We sinned, we wasted his perfect creation and essentially kicked God out.
It should have ended there, but God loved us so much he spent decade after decade trying to slap us into shape.

((Which he also did THROUGH the imperfect human race, and I believe some details are false))

And then - it should have ended there.
But no - John 3:16.
He sent his LITERAL, REAL SON to DIE because we screwed up.
Everything is rational.
People say God doesn't fit inside logic - well of course he does!

He's given us chance after chance after chance to wake up and realize he is the creator. It's perfectly rational for God to NOT want to spend eternity with people who ignore him.