I have no couch and probably never will. They're comfortable wastes of space (IMO), encourage lethargy which I struggle with already, are monolithic and also difficult to get really clean. In east Asia where I live, people tend to be very sensitive to western body odor and strong scents (though stinky tofu is a thing, go figure).
Since my climate is hot and humid like Florida with very short winters, and my home is also an occasional art space/artists residency with semi-public events, all my furniture is multifunctional. Sweat management, aesthetics, mold resistance and I suppose unconscious branding of my project/art were all factors. Probably my favorite piece of furniture is an antique Chinese daybed with tatami which functions as a couch during events, and a bed for visiting artists. I just love looking at it too, though it's so heavy only professionals can move it.
OP sounds like going couch-free is a great idea for you. A tatami mat with pillows against the wall can be a nice substitute for a bulky couch if you want to make out/have a bunch of friends over to lounge.