>>313306264
The brain doesn't care that much about incomplete input. Even putting a POV image on a monitor on your bed can provide some sense of realism. VR can take that much further, especially if you create a way to use an onahole hands free and align it with the model. I haven't personally done anything lewd in VRchat, but I expect having the partner controlled by a real person makes it very realistic.

There is always that slight sadness that it isn't perfectly real, especially if you do something without thinking and it's beyond the capabilities of VR.