Why did Ozzy osbourne write the song mr tinkertrain?

Ozzy Osbourne wrote "Mr. Tinkertrain" as part of his 1991 album No More Tears. The song explores themes of childhood innocence and the darker aspects of life, reflecting on the loss of innocence and the struggles that come with growing up. It conveys a sense of nostalgia and a haunting atmosphere, setting the tone for the album's exploration of complex emotional themes. The character of Mr. Tinkertrain serves as a metaphor for the unsettling realities that can intrude upon a seemingly carefree existence.