The term drug is pretty broad. For many people it implies addiction. You can get addicted to anything that releases dopamine for you, including sugar. It always depends upon your own intention and awareness of what you are doing. Personally I don’t drink alcohol since the state doesn’t benefit me, I smoke weed once every 1-2 months as a reward and never when I am sad. It feels really healthy, relaxing my musclure tension, allowing my organs to losen up again. Also it enables you to see certain experiences for example sport, work, life goals, movies, conversations, theater, music, meditation or nature from a total unattached new angle.