[clcaev]

I wouldn't assume that sad songs make you more lonely. For someone dealing with grief, it may act as drug-free therapy. Perhaps deepened sorrow at first, but when one deals with grief, mental state and behavior can improve.

[zdragnar]

Unstructured therapy is exactly as effective as it sounds. You're just as likely to process the emotion as you are to enable and reinforce it.

Taken too far, wallowing in the pain becomes a perverse pleasure in itself, a bit like cutting or other self harm.