I think you've got it backwards. There are plenty of reasons you'd want to put on a VR headset if it weighed as much as a pair of glasses, had a 180 degree field of view and like 5x the resolution of current headsets.

The reason the software doesn't exist is because compelling hardware doesn't exist for it to run on, so nobody bothers to write it.

Apple is imagining this device will be used for productivity but it's still painful to actually wear for long periods. We're a long way from being limited by software instead of hardware.