It would be fair to say that I have an ascetic streak--for part of my twenties I was a car-free vegetarian who commuted by bicycle and drank more tea than anything else, after much reading in Thoreau, Edward Abbey, Frank Herbert and Buddhism. Some of this I found to be impractical in a small Midwestern city. The vegetarianism I found to be a strain on interpersonal relationships. It made dining with others very troublesome.
The thing is I couldn't let philosophy in general go even if I wanted to. I think for some people the questions arise unbidden. When Salman Rushdie went into protection after the fatwa, Susan Sontag told him "Salman! It’s like being in love! I think of you night and day: all the time!" It's like that with philosophy.
Death, life beyond the grave, ethics, morality, the nature of human life; even without Epicurus I should spend much time turning these things over in my mind.