Beautiful Poison

Beautiful, poison, two incredibly contrasting words that even on their own hold strong connotations. How can things that are so bad for you feel so good? Going through life, most people on this planet can testify with the notion that the most toxic things are the hardest to resist. They are also the easiest to become addicted to.
Our protagonist however, is not like most people. They're the kind of person that doesn't indulge in the simple quick pleasures of life. That's just the product of their upbringing.
Can they resist temptation, and greed a human emotion which can be detrimental , can they resist the beautiful poison?