So, when should you actually use a message queue for communication between services?

hey everyone, i've been thinking a lot about how different services in a distributed system should communicate. we've all heard about message queues like RabbitMQ or Kafka, but when is the right time to introduce one? is it always about decoupling, or are there specific performance benefits or patterns that make them essential for certain use cases? i'm curious about your experiences and what triggers you to add a message queue into your architecture. what problems did it solve for you