when I was a kid I wanted to be an astronaut in the future but now I realize being an astronaut is a very difficult and dangerous job,so I decided to become a mechanical engineer
Lol. same. Either that or in aeronautics. Then I wanted to get into a medical school for Veterinary Sciences. Then I wanted to be a physicist. Became none of those. 
No I want to open up an animal shelter here and work on promoting veganim in my region