Klaus expected so many things that could go wrong in his life. However, he never expected the heavens to go to such extreme lengths just to kill him.
He saw his entire life as Fruity, the renegade monk.
He saw the hardship.
He saw the pain.
But he also saw happiness.
He went through it all and loved every last minute of it. But he knew the heavens never wanted that happiness to be part of his life.
To them, while Klaus was growing up, their job was to ensure he struggled until he couldn't do it anymore.
But for all the nine lives he had lived, they tried everything, and finally, they could tell he wasn't someone they could kill.
So they chose to bring the pain around him and watch his despair until he succumbed, and there, they would swoop in and end him for good.
The paragon cannot be allowed to rise, with all nine lives aiding him. That was what they were afraid of.