msseker: Don’t throw the baby out with the bathwater. Never doing Mitzvos is not better. Aveiros do NOT erase Mitzvos. Do you have any idea about the value of one Mitzvah? One Omain? These things are eternal. I don’t have the time or the Gemora’s here, but there are some amazing stories about this.
However, you make a very valid point. When you bring one to appreciate a Torah lifestyle (and olam haboh), you still have a responsibility to help them throuout. Actually a big responsibility.