The answer is in the story of Adam & Chava. The Torah relates that Chava was not convinced to eat from the tree until she came to the understanding that she really would not die. However, when she did eat she insisted that Adam eat too, and Rashi adds: lest she die and he survives and will marry another. Why now all of a sudden she is concerned she will die, when the whole basis of her eating was that she wouldn't?
We live in a world of " תועיגנ " - personal biases that can blind us to the reality around us and make us see things through different lenses. Initially when Chava saw the juicy fruit, as the Torah states:
" כִּי טוֹב הָעֵץ לְמַאֲכָל וְכִּי תַאֲוָה הוּא לָעֵינַיִּם"
- the tree (fruit) was good to eat and enticing to the eyes.
She was convinced that nothing would happen to her. Her desire blinded her to anything else. Later on once she had eaten and that desire had been fulfilled, all the doubts came back that maybe she would die, and even worse that Adam would live with someone else. That thought was so intolerable, so she insisted he eat too. These contradictions we find in ourselves on a daily basis. Our desires, feelings and wants, are constantly influenced by our surroundings and by others that at times can blind us to the true reality of the world, and the ability to see the greatness of Hashem.
