So it is a case of "your hobby isn't my hobby, so, therefore, you shouldn't practice it." 

Good to know. 

Also glad to know that you decide that someone is an adult or not based on their hobbies. What hobbies do you feel are sufficiently "adult"? Crossword puzzles? Knitting?  Or is this a situation where I shouldn't have a hobby because i'm a woman and therefore should be raising children?