Coming from someone named MaskedRage, I'm a little confused by your version of meaningful. Anyway, isn't it obvious that some things are meaningfull to some people while not to others? and MORE obvious that Opeth aren't death metal?

If you can't handle a little suffering find a different fucking style of music.
That said, I think Lord Worm's lyrics are pretty interesting. (wee bit of suffering though. You can take it kid-o)
"'Do you say that my lyrics are gore! Splatter? Fucken idiot, you must have got the CARCASS album instead. MY LYRICS ARE SATANIC POETRY!'
-- Fenriz"