Ask HN: What do you use to create diagrams?

I've been working on a diagramming tool [1] and wanted to get some thoughts from people who regularly make architecture and other technical diagrams. I know my own experiences but I'm quite curious to hear others.

I'm guessing for a lot of people draw.io and Excalidraw are probably the go-to. If you use draw.io (or something else), what do you like about it, or what do you wish was better?

[1] - https://app.vexlio.com/ for the curious