Yeah, I draw a lot of boxes, redraw too :)

I've tried various tools, but nothing comes close to the same freedom.

That's actually the lack of freedom that killed it for me.

Drawing a diagram, it frustrated me to no end to come at the bottom corner of the page and need to either redraw it all on some bigger canvas, or try patch a sheet to extend it, or continue on another page while looking back at the previous one. Same for the max length of a single line.

In figjam or miro the canvas just expands infinitely, it's near A3 size yet I never run out of paper, never run out of color ink, never run out of post'its etc.

It's slower, but I never have to think about the material side of things, which is incredibly freeing to me.

To each their own of course, at this point I think the options are just a lot more balanced than 5 or 10 years ago.