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> also have craving as everyone else

How could you possibly know that? You don't even know how your brain works, let alone how other people's brains work.

I can drink alcohol and be perfectly fine, but a lot of people can't, because they're alcoholics. Similarly, Ive met people who have tried to smoke but couldn't pick it up, meanwhile for me it will be a lifelong, every day, struggle.

The mind is complex, have some humility. You are not necessarily a beacon of purity by your own doing.