can be, but I don't use it like that.

what I like the most that I don't have to think where to put the notes...

I just journal things every day. When you start feeling like being more organizes, start tagging. Then add metadata. Then searches based on them. Then maybe templates if things are repeating.

e. g. I track how much I owe for what type of fire wood, I have a shopping lists organized by names, types, etc.

I track both work and personal and just by a tag I see all of the related notes.