If you're trying to answer hard questions, find insight, discover patterns in your past thoughts conversations and things you're reading...
If you've got ideas you're struggling to clearly articulate and want a medium to explore them? It is
1. Trying to learn something new and challenging, notes in Roam 1000x useful for exploring the material
2. Feeling overwhelmed with life chaos, Roam's bottom up organization is calming for tasks, projects, errant thoughts, and fitting pieces together