I mean, if one were going to write for money, then there are plenty of more popular topics a writer could write on and possibly get enough views to use advertising, or even get a job for a major 'magazine style' website. So why write about D&D?
What I am about to say, makes me sound like a mad man.
I have no qualms about this, because we are all mad men here.
If you were not, you would not have come here.
Old school style role playing is a shamanistic pursuit. The realms we describe — all possible conceivable realms really — actually exist. In the real sense that they are a real place where real people live and breath.So that's pretty much the reason why I do this instead of something else.
We can view these realms as if through a glass darkly. If we gather in a group and collect our ritual objects, then engage in our formal structure of play while remaining free of intent to influence the events based on our pre-conceptions, then the fog clears. Our ritual, our dice, act as augers to view other realms. Through this process we gain strength, wisdom, and join with the universal spirit of life. Our lives are enriched. We become connected to universal myth.