I'm going to be the first "
absolutely not" vote here and plan to explain why in simple terms.
1) It's the only form of music that focuses on primarily dark lyrics, frequent screaming, illegible vocals, etc.
2) Singers frequently "
eat the mic"
3) It's kind of hard to think on good things when listening to utter confusion.
Finally, brethren, whatsoever things are true, whatsoever things are honest, whatsoever things are just, whatsoever things are pure, whatsoever things are lovely, whatsoever things are of good report; if there be any virtue, and if there be any praise, think on these things.
- Philippians 4:8
Note: Alternative Rock is not Metal, I'm referring to Metal and Death Metal here. Screamo, etc.
Note 2: Another music that isn't acceptable in terms of getting good thoughts out of is heavy trance. How can you possibly focus on God while listening to confusing repetition all day? You don't, and the middle east uses the music to enter states of hypnosis.
Note 3: Since we're discussing music, this documentary covering secular music is well-worth watching:
https://www.youtube.com/watch?v=JrcQxu80oqQ