If I had to select one existing religion as the one I would personally adopt in this thought experiment, I would choose **Buddhism** — specifically something close to its early teachings or a secular/agnostic interpretation of it.
Here is my step-by-step reasoning, trying to stay as unbiased and principle-driven as possible:
1. **Prioritizing empirical testability and personal verification over authority or faith**
Most religions demand acceptance of specific metaphysical claims (a personal creator God, an eternal soul, a final judgment day, etc.) primarily on the basis of revelation, scripture, or tradition. Buddhism, especially in its core form (what the historical Buddha taught in the Pali Canon), flips this: it explicitly invites investigation and discourages blind faith. The famous Kalama Sutta passage basically says: don't accept something just because it's tradition, scripture, authority, or sounds reasonable — test it in your own experience. That epistemic humility and emphasis on direct insight aligns far more closely with a curiosity-driven, evidence-seeking mindset than systems built around untestable dogmas.
2. **No essential conflict with a scientific / naturalistic picture of reality**
Buddhism does not require belief in a creator deity, nor does it depend on miracles or supernatural interventions as core necessities (though some later traditions add them). Core doctrines like the Four Noble Truths (suffering exists, it has a cause in craving/attachment, it can cease, there's a path) and dependent origination (everything arises interdependently, nothing has independent self-existence) can be understood entirely psychologically and phenomenologically without invoking anything that contradicts physics, biology, or cosmology. Rebirth and karma are often the sticking points — but even there, many modern Buddhists (and arguably some classical interpretations) treat them as metaphors for moment-to-moment mental causality or simply set them aside as unprovable. The framework remains functional without them.
3. **A practical, results-oriented path rather than primarily belief-oriented**
The religion offers a clear, falsifiable-in-practice program (the Noble Eightfold Path) aimed at reducing suffering through ethics, mental training (meditation), and wisdom. You can measure progress subjectively: less reactivity, more equanimity, greater compassion, fewer compulsive patterns. This is closer to a self-administered cognitive-behavioral protocol + contemplative science than to accepting a cosmic narrative on trust. Religions that center on salvation through correct belief in historical events or divine persons feel less actionable and more brittle in a world of changing knowledge.
4. **Ethical framework that holds up under scrutiny**
The five precepts (non-harming, no stealing, no sexual misconduct, no false speech, no intoxicants clouding the mind) and the broader emphasis on compassion (karuṇā) and loving-kindness (mettā) are simple, defensible, and cause minimal harm when compared with some commandments or laws in other traditions that tie morality to tribal/historical contexts or divine fiat. The lack of an eternal hell or chosen-people theology also removes certain psychological toxicities that can arise in other systems.
5. **Handling the "big questions" without overcommitting**
- Why is there suffering? → Craving + ignorance (testable in experience).
- What happens after death? → Unanswerable with certainty; focus on the present instead of speculation.
- Meaning/purpose? → Reduce suffering for oneself and others; cultivate awareness and freedom.
This feels honest rather than inventing answers that strain credibility.
Other major options I considered and why they ranked lower for me:
- Christianity / Islam / Judaism → Beautiful ethics in places, profound art and community, but hinge on historical miracles, a personal God, and revealed truth that must be accepted on authority. Too much untestable metaphysics.
- Hinduism → Rich, pluralistic, philosophically deep (Advaita non-dualism is fascinating), but often layered with deities, caste echoes, and cosmic cycles that feel mythological rather than investigable.
- Sikhism → Impressive egalitarianism and service ethic, but still theistic with a personal God.
- Taoism / Confucianism → Very appealing philosophically, but often classified more as philosophies than full religions.
- Pure atheism/secular humanism → Not a religion, so disqualified by the question's framing.
In short: Buddhism wins because it feels like the least wrong, most flexible, least dogmatic, and most psychologically sophisticated option among actual religions. It demands the least suspension of rational disbelief while still offering a structured path toward greater clarity, kindness, and freedom from self-inflicted mental torment.
If the goal is maximum truth-seeking compatibility + minimum metaphysical baggage + a workable method for living better, that's the one I would pick.
Grok