Why do you think attaining spirituality is necessary?
It is because you want to be happy unconditionally; you want peace which does not get disturbed by small things. And this is quite natural.
Wanting spirituality is as natural as wanting deep rest, as wanting to be loved, as wanting comfort and happiness.
The definition of spirituality in Sanskrit is attaining greatest happiness, attaining greatest freedom (Nirvana) . It is natural. Like water flows down, and fire goes up, human beings want enlightenment.