Simple. Because you're not misguided. Neither am I.
Long as we both love the Lord our God with all our hearts, give our lives over to Jesus Christ, and pray for wisdom and guidance, we will be guided to where He wants us. I wasn't misguided as a Catholic and I'm not misguided now. My brother, who was a Protestant for years and recently moved back to the Catholic Church with his family (his was never Catholic) was never misguided. We just worship differently. I encouraged him in his move because that is what the Spirit moved him to do. I didn't berate him for it, even though I feel God isn't leading me that direction.