Some traditions are bad

Evangelicals probably need to learn much more than we do from the great traditions of the church. But as Augustine recognised "Tradition" alone cannot be ultimately authoritative. He said:

“If we are to look back to long custom or antiquity alone, then also murders and adulterers, and similar persons can defend their crimes in this way, because they are ancient.”

Cited in Martin Chemnitz, Examination of Council of Trent, Part 1 (trans. Fred Kramer; St. Louis: Concordia, 1971) 307.