Hello Eric,
You have talked about the rights of people but you have evaded talking about the Rights of God. Doesn't the One Who created us and blessed us with faculties of hearing, seeing, intellect and much more, the One Who has sent down Books and Messengers to guide us and teach us, have Rights over us? Most certainly, it is God's Right that we should worship Him Alone and associate nothing with Him. This is also clear from reflecting over the Names of Allah سبحانه وتعالى.
Whilst truth and beliefs should lead to the world being a better place, the question of God is at the heart of everything. It is not something we can brush under the carpet when our very salvation depends upon it. This doesn't mean we cannot be just or kind to those who have differing beliefs, but to pretend that the question of God is unimportant is a disservice to humanity and moreover ingratitude to one's Creator. To say that there is no difference between truth and falsehood is a lie. Allah says in the Qur'an, (interpretation of the meaning):
Those blind ˹to the truth˺ and those who can see are not equal, nor are those who believe and do good ˹equal˺ to those who do evil. Yet you are hardly mindful. [Qur'an 40:58]
No one has the right to say what does or does not matter to God, except God or His Prophets. The Prophets all focused on the same core message, that of God's Oneness. The Final Revelation, the Qur'an, is filled with proofs and arguments highlighting there is only One God worthy of worship. Clearly, this is a matter of utmost importance.
You mention asking God for guidance to do 'His Will'. God has sent us guidance but it is upon us to submit to it, not invent our own ideas to follow.