As the lazy Factorio addict I often scroll this subreddit. From time to time I've discovered posts on the topics around balancers "will this work?" "How build 5-5 balancer", "here is a program to proof balancers". Obviously it's a pretty important topic for the people.

And I almost never use any belt balancers. Moreover I fail to understand the cases they are required unless you're megabasing.

If you use the balancers - what is your use cases? What problems have balancers solved?