Using it in a DAW for free was my initial reason but I liked using it more standalone on my Steam Deck so I could have something to mess with when not at home. A lot of what I've done with Cardinal is making the weirdest noises I can and trying to make generative tracks. I'm not sure I've ever recorded something I made but I do learn a lot about synths when I experiment with this stuff. When I go back to other softsynths I feel like I'm tweaking settings with a bit more knowledge and with more intention instead of just twisting randomly.
What are you using for external controllers? I should probably get into that as a next step.