I think bass guitar is useless?

So is there a question here? Thanks for the 2 points.

If you think it's useless then branch out in music. A lot of bands have some amazing bass. Tool and the chili peppers for example.

With no bass line, or the bass playing the same line, it really isn't music. Love it or not, it's not music, just as rap isn't music. Your case doesn't hold water, because that's such a small part of the world's "music," for lack of a better term. Frankly, I can't be impressed by the views of anyone that would listen to it.

Um yeah bass guitar, 2 free points Thanks. Deathcore Black Metal Death Metal Are all crap that shouldn't be considred music.

Listen to Atheist, you'll understand the importance of bass playing. It's funny how you stereotype people who think deathcore sucks...

Metal is like a apple; everything is great, except for the "core".

Let me be honest with you, I am not a fan of deathcore or death metal but I do give respect to the players and fans. I'm more of a classic metal/thrash metal kind of guy but I completely respect your opinion. Anyways, bass is not too vital in death metal mainly because of the loud drums, guitar, and vocals. It nearly masks the bass itself. But bass does give the song a fuller sound. It makes the song richer and heavier but it is not heard. I am a fan of melodic death metal, so I know that bass is not heard much throughout the song. BUT, some songs have a section of a short bass only solo which later progresses into the song.

Do you even Rhythm?

you do know pig destroyer have a bassist now, right? also, they are grind, not deathcore or death metal, so they are a terrible example for what you were talking about.