Apparently you feel that doctrine can be made up as you go along. Clearly you have no idea of what is required of Catholics in the practice of their Faith. No Commandments, no sin, no evil, anything one wants becomes a human need and it is completely legitimate to indulge oneself in whatever vice one is addicted to: in fact vice becomes a virtue.
Persistence in sin keeps one away from the Eucharist not doctrine. Receiving the Eucharist in a state of mortal sin only serves to compound that sin not forgive it. Anyone living as a serial adulterer is deceiving himself if he thinks that this is compatible with loving God.
Christ's words, "Father forgive them for they know not what they do," are most apt in today's world.