First off, I never said I'm a Buddhist. I do, however, practice mindfulness meditation and pranayana, and I have studied Buddhism in the past.
Secondly, the Buddha having passed away does nothing to discredit Buddhism. Westerners are quite wrong to attack Buddhists on historicist grounds in the manner you are doing, it shows a misunderstanding of the Dharma.
I would argue the "Jesus" Christians claim to know in a "personal relationship", a living presence, more often than not is an illusion or projection of their own minds (minds often polluted with greed, hatred, fear, and other vices). At least Buddhists are being honest about the nature of their religious beliefs.