For me it's less about "sucking" or not, and more about understanding the limitations of what could be delivered even if it didn't suck. You could take every drawback of current VR and solve it and it'd still be additive, not revolutionary, because of essentially inherent limitations. Unless someone is proposing a holodeck, and even then I'm not convinced it replaces much of what we already have because there'll always be a basic efficiency to existing pre-VR control paradigms.