Soldering cable ends for AC terminations

I always use solder.
1...It keeps loose strands of copper from shorting out.
2...It provides a "soft" metal to clamp down on, which I think improves the connection.

Solder adds impurities, No solder is best.

mapleleafs3, and where do those impurities go? And aren't they 'flushed out' by the current after some time?
At any rate, I don't see where it makes a difference if the solder is just at the protuding end of the connection where there is no current.
Bob P.

Solder is bad period

>>"Solder is bad period"<<
[Mapleleafs3]
>>>>>>>>>>>>

Name me an electronic component out there that is not full of it! Solder that is.....
Solder is the electrical bonding agent that holds all the electrical connections together. Printed circuit boards could not exist without the use of solder to electrically connect electrical components to them.

Where solder can cause a problem is where it is used for tinning the ends of speaker cables and such. Solder does have a tendency to corrode on the outside where exposed to air and moisture. Beneath the surfice of the solder this is not a problem.