What good is philosophy?
It teaches humility in point of knowledge and belief. It lays bare the infirmity of reason. It prompts us to seek other sources of insight, including mystical intuition and divine revelation, while supplying us with the tools for their evaluation and critique. Its problems, though insoluble, can serve as koans.
Good philosophy debunks bad philosophy, pseudo-philosophy, scientism, epistemic pretense, bad religion, and bad politics. It is a mighty curb on fanaticism of all sorts, that of the religionists as well as that of the anti-religionists. It keeps Jerusalem in check even while it is itself fed and enlivened by Hierosolymic themes and tropes. While serving as prophylaxis on excess and overreach, it yet makes possible a reasoned faith and a reasoned mysticism.
And it does all of this critically and skeptically in the best sense of the term: in the spirit of rational inquiry. It is an enemy of the dogmatism of the religionists and that of politically correct leftist anti-religionists.
So philosophy, while in some ways miserable, is in many ways magnificent.
In any case it is necessary for the good life and worthy of spirited defense, with blood and iron if need be, against the anti-civilizational forces of leftism and radical Islam which work in synergy, whether wittingly or unwittingly.