Language teaching methods are important to study for several reasons:
1) Studying methods provides teachers with an understanding of how the field has evolved over time and exposes them to practices they can adapt or implement.
2) Experience using different methods gives teachers basic skills and allows them to reflect on their own assumptions and beliefs.
3) Comparing methods offers alternatives to how teachers were previously taught, so they can choose approaches aligned with their own views rather than what was imposed on them.
4) Understanding methods is part of building teaching knowledge and joining the community of language teaching practitioners. It expands a teacher's toolbox to address diverse learner needs.