Uncomfortable to the point of sickening. Space and price are valid point but for me its the sickening impression of fake motion, staring at screen so close to your eyes, burrliness, wheight of the headset and silly looks.
Looking silly is the one critique of VR I just don't get. Your in the safety of your own home and either A) live alone or B) live with a significant other/parents/roommates. In which case, who cares what they think you might look like while enjoying yourself?
Years ago i remember working at a company where a vr presentation was cancelled because some high level automotive management folks refused to wear a headset because it might mess with their hair. Thats just one example. I personally dont like to put on these headsets too.