Originally Posted by 357 mag:
Why does everyone down it so much is it really that bad?
If I take the intent of your question correctly, it relates to the .380's viability as an self-defense round. In that light, it is not lethality, but rather the round's (in)ability to produce incapacitation that is the issue.
It is generally held that such rounds (the .380 being a good example as well as the .32ACP, .25ACP etc.) lack the ability to produce enough penetration if a JHP is used and expands- meaning that one must then choose between penetration (FMJs) and expansion (JHPs).
Of course, different folks have varying preferences as for what constitutes desirable terminal ballistic performance in terms of expansion and penetration- some will find it (the .380) to be acceptable and some will not.