Was Jesus sent to the Earth so people could commit sin and lead sinful lifestyles yet still go to Heaven?

I am a Catholic and I notice there has been a growing movement within the Catholic Church to accept anyone who wants to join the Church regardless of whether or not they will go to Confession or regardless of the lifestyles that they choose to live. Basically, for this movement, the Catholic Church needs to become a church of unquestioned inclusiveness. This has made me wonder if this movement is acceptable to God. Moreover, it makes me contemplate **what was the primary purpose of God sending His only Son to the Earth to save sinners**? God sending his Son to the Earth to save sinners implies that God does not approve of Sin and thus does not approve of people committing sins and/or leading a lifestyle that is sinful in the eyes of God. (Recall what happened to Sodom and Gomorrah.) God decided to send his Son to the Earth and Jesus did the Will of the Father by preaching a message that people should not sin, for sin and sinful lifestyles are displeasing to His Father. Yet, God also sent Jesus to take away the sins of the world and this was accomplished through His Passion and His Crucifixion. This makes me wonder why was it necessary for the Son of God to come to the Earth and to tell people not to sin and to not lead sinful lifestyles if the Father's Plan of Salvation was for all of mankind's sins to be forgiven by Jesus's death on the Cross. This is an apparent contradiction by God because by Jesus taking away everybody's sins means that everybody can commit an unlimited number of sins and/or lead sinful lifestyles yet everybody will go to Heaven. **Was Jesus sent to the Earth so people could commit sin and lead sinful lifestyles yet still go to Heaven?** I am seeking to get answers from other Catholics, but I am also open to answers from those of other Christian denominations.