Absolutely right! Unfortunately, many Catholics neglect their faith and leave the Church. These are the premiere victims of those non-Catholic ministers who tell them they are not christians until they are "born again".
Life can be a long faith journey. For some of us, we become distracted and turn our attention to other faiths under this false notion. Essentially, we are "born again" through the Sacrament of Baptism and with God's graces, we will continue along the rocky path that leads to eternal happiness with our Lord.
Many would state that they are “born again” every morning when they turn to God in prayer and repentance, or every time they receive the Eucharist, or every time they go to confession. In this sense being “born again” is not just a one-time deal. Conversion is just the first baby step, not the end-state. We must each day be born again, and converted through the renewal of our minds and spirit by drawing closer to Christ anew each time. Such is the need our fallen nature requires.