All realities are real,

even if we think that some are more real than others.

If dreams are real - as they certainly are while we are dreaming -
“We can never prove we’re not in a computer simulation because any evidence of ordinary reality could be simulated,” writes David J. Chalmers in Reality +.

All experience is real, whether it comes through heroin or dreams,
ayahuasca, peyote or virtual reality,

and it is very good
to sleep alone in a big bed.