This is pretty accurate to my experience. Weed makes many relaxing activities more enjoyable. On nights when I had nothing planned and wanted a chill night at home, weed would make that more enjoyable. But then it became easy to justify smoking every night that I didn't have anything going... which is most nights. So, soon I was smoking basically every night.

That said, I feel like I drifted between the two categories you describe. Sometimes I'd chill on the couch and do nothing but consume. Others I'd feel inspired to do something productive, like work on a side project, clean the house, go for a walk, or practice guitar.