God gave you the Right to choose Hell over Heaven, did He not?
It is Free Will that is the source of Rights as well as Wrongs.
So whether God gave them to you, or you claim them by claiming unalienable authority and ownership over oneself, you have Rights and they are definable. They are NOT subject to religion, dogma, or the state.
If one thinks about Rights in the Free Will context, it really doesn't matter how one attains the Free Will, just that one has it.
Morality is simply the absence of Wrong Behavior.