It’s “easy” to descend into nihilism and the view that human existence is ultimately devoid of meaning. It’s more challenging (and rewarding, in my opinion) to accept the struggle of life as the point of life itself, to keep moving even when it seems like it’s fruitless.
Basically, I stay alive out of spite against nihilism and the impulse that says to give up.
Living also leaves open the opportunity that things will get better and that some meaning will eventually reveal itself. Nihilism and suicide (physical or philosophical) lead to nothingness and annihilation.