I&#x27;ve been programming for ~8 years as well and have implemented BFS multiple times, especially in occasions where I have to travel nested data structures and want to print them in a specific order.<p>BFS and DFS are the bread and butter of tree&#x2F;graph problems and every software engineer is expected to encounter them at least once in their life. What if you want to debug a complex data structure or just a tree and want to print out its contents in order? Is it really such a weird thing? It&#x27;s akin to asking to do a for loop through a list to print the elements, except slightly more complex (but certainly something that should be achievable by intuition rather than by memory).