When should you think about using a message queue to connect services, instead of them talking directly?

hey folks, i've been seeing a lot of architectures lately that rely heavily on message queues like Kafka or RabbitMQ to connect different services. it seems like a good way to make things more resilient and scalable. what are your thoughts on when this pattern really starts to pay off? are there specific scenarios or thresholds where you'd say, 'yep, time for a message queue,' versus just having services call each other directly or using something simpler