People affect each other, yes of course
That doesn't necessarily create meaning
Of course you can take a Sartre like view and say we create our own meaning, which is definitely true - but you can also accept the inherent lack of meaning and accept that you don't value any meaning you place on things
In 100 years I might be remembered in a picture book, in 200 not at all. And eventually all humans will die out and even my species will not be remembered. Heat death ensues and not even a proton will exist any more - to accept these eventualities and the scope of the universe puts our existence into greater focus
There is nothing inconsistent with nihilism - of course it's not conducive to government or properly functioning society, but being a nihilist is also accepting from our point of view that too is meaningless
