In my fantasy-medieval-with-magic world, after a great war between the gods that destroys the old gods, a new "one true god" is born. Out of a love for the people, and a desire not to change who those people are, the new god bestows a blessing to all who accept the gift.
The blessing grants the following effects
- Cure disease/poison.
- Fast healing (minor injuries heal in a day, major injuries like broken bones heal in a week)
- Improved empathy (you know exactly how someone else feels as long as they are not trying to hide it)
- Improved learning/strength (if you want knowledge, agility, or strength, your DNA is no longer a handicap. AKA everyone who puts in the same amount of effort and are at the same starting point will achieve the same results)
- Green thumb (Your love for your plants, pets and livestock nourishes them, helping them grow big and healthy)
Everyone instinctively knows about the blessing, and understands how to receive it. They can also freely opt-in or out as often as they like. The people of the world did not participate in the war of the gods, and enough time passed between the end of the war and the rise of the new god for everyone to learn the old gods are dead. They only learn about the new god when the blessing is offed (minutes after that gods birth). All they know about the new god is that they are granting this blessing, and promises not to interfere with this world that is now theirs (aside from the blessing, which is granting a portion of the power of the gods to all people).
Given that receiving the blessing is no effort, and how powerful it is, what justifications could people give to reject this blessing?