OpenTelemetry is an open-source observability tool that has become the second-largest project in the CNCF, behind Kubernetes. Its adoption can be driven by various reasons, some good and some bad. Poor reasons include following the crowd, building one's own observability product without considering the complexity involved, and vendor neutrality as a sole reason. Instead, good reasons include bridging gaps with manual instrumentation, sending data to multiple vendors, and gaining insight into third-party libraries and services. It is essential to approach technology choices pragmatically and evaluate use cases carefully before adopting OpenTelemetry or any other tool. The project's open-source nature makes it appealing, and contributions are always appreciated.