Try to visualize Guru Nanak Dev Ji holding a leg of chicken in one hand and a bucket of KFC in the other. A Sikh eating meat doesn't make sense, yet alone look right. The human body was not designed to take in meat. And the accounts where they say the Gurus ate meat or hunted are not true because they can't be proven. In the GGS it may not say that we can not eat meat, but where does it say we should?