Hindu eat beef? It's not against the religion to eat it.

That's a misconception, they just make sure they die with dignity and lived as happy a life as possible.

Which some sects argue it's impossible if they're not living a wild life in nature, and argue one shouldn't eat them ever (as there's basically no such thing as wild cow anymore.) But there's no ban, it's just seen as immoral.

Sikh having a warrior thing is funnily enough fuck all to do with war. It's a holdover from ancient times that's just stuck around as part of it.