Thanks guys for your responses.
I Appreciate all your points of views and am grateful for your sharing them.
After much contemplating, my point of view is that there is a very broad amount of metal music out there. Ranging from death metal, black metal, heavy metal, metalcore and so on… And in each of those sub-genres the different bands in each of them all have different types of energies which will define their type of lyrics, obviously.
A lot of metal bands have negative depressive lyrics and although their riffs can be out of this world, the negative depressive lyrics could have a negative effect on you. But then again not all of a band’s lyrics will be depressive. And there are a lot of metal bands who have a small amount of depressive lyrical songs and still have killer riffs.
So the key is to balance the music you listen to, try avoid depressive lyrical songs as much as possible.:)

I agree with Jade and Bran that balancing and branching out into different genres will be best. I agree with Popi to a degree, but not that metal brings depression. I think by only ever listening to metal with depressive lyrics will perhaps not make your situation better.But there is metal without those depressive lyrics, so not all metal will bring negativity to you.

@thebranman Thanks for your post man 🙂 This is a bit off topic to the thread. But you have an interesting theory that it is beautiful to experience both happiness and sadness… I’m not on the same page as you to think its beautiful to experience sadness. Please explain your perspective to me.