There’s no reason why I shouldn’t be serving a life sentence in prison right now. There’s also no reason why I shouldn’t be suffering from some incurable disease. There’s no reason why I shouldn’t be poor, destitute, and lonely.
For two Christians, there is no such thing as irreconcilable differences. If two people believe the Gospel, then for the one who sinned, the Gospel compels them to repent and ask forgiveness. For the one sinned against, the Gospel compels them to forgive their offender.