Why marijuana and belladone generally used to worship Lord Shiva?

In Hindu worship of Lord Shiva, it is generally observed that Marijuana (Ganja or Bhang) and Belladone fruit (Dhatura) which are offered to Lord Shiv as food. These both substance are come under the narcotic act and using in India is illegal. Then some may ask that then why these things are used in worship and also being consumed by some devotees. Yes using of these narcotic materials cause to health problems if these things are taken in excess quantity more than required quantity. According to tantrik and yogic experts considers that consuming Marijuan (Ganja) as smoking or eating Marijuana (Bhang) and Belladone (Dhatura) help to attend deep meditation and Samadhi. As Lord Shiva is the Supreme Yogi and Tantrik, Lord Shiva alway happy to consume and smoke marijuana. With that he also love to eat Belladone.
Hence, typical Shiva Devotees like aghories and Kapaliks alway used to consume Marijuana and Belladone. A chemical compound containing in Marijuana is called Cannabinoid that affect our brain neutons  to think and concentrate on single thought. Due to Cannabinoid, dopamine is get secreted in brain. Then the person feels pleasure, relaxe and euphoria. Therefore, in ancient  india sages were using marijuana to go in deep meditation.