Lol seems like Nihilism, or at least something like that is wayyy underrepresented here.
Hmm i think the flavours of nihilism are kinda weird, almost selective. To refine:-
- Life is inherently without meaning.
- There's nothing to tend to.
- Love, Linguistics, Mathematics, and the Sciences - they're real and can be experienced, appreciated, and worked on together by human minds. (This is where I enjoy stuff)
- Make your own purpose / meaning (this seems be like Moral / Existential Nihilism that you've mentioned - so I'm saying that these branches or parallels, are really just different decisions that one can make to extend from complete nihilism)
Google's first explanation:-
Nihilism is the belief that all values are baseless and that nothing can be known or communicated. It is often associated with extreme pessimism and a radical skepticism that condemns existence. A true nihilist would believe in nothing, have no loyalties, and no purpose other than, perhaps, an impulse to destroy.
Can't relate much to this.
But this, ok -

The google'd explanation is crass. Sounds like something written by a person angry at subjectivity/changing values, associating nihilism with todays problems of 'the youth' Or an angsty metalhead