That’s an important question. One I haven’t resolved. I collect evidence every day, yet remain unpersuaded.
Evidence in favor:
Erections
Orgasms
Pain
Touch
Connection
Love
Breath
Hunger
Evidence against:
Flaccidity
Numbness
Aloneness (note: distinct from solitude)
The list in favor is longer. But the constancy and destructiveness of the list against – and, in particular, its last item – is overwhelming.