Yes, true too. For me on the more recreational levels on opiates
the everlasting wood is a benefit for her. Actually, one can
train oneself to "cum" in the mind without the physical act of
ejaculation happening. As soon as one learns that trick, the next step
is to become multi-orgasmic in the mind. Sex is mostly in the
mind anyway, yes there is a physical part of it, but most of the
enjoyment of it is in the mind.
But on the higher mind-fuck doses with opeates, the ones where
sometimes you have to remember to breathe, the wood just ain't
happening for me.