"I would explain to him that while collecting coins is his hobby, I have other hobbies of my own which includes hiking and bike racing.
I do not find the collection of coins as a fun thing to do in my pass time as it does not pump my adrenaline the way bike racing and hiking does.
I am sure that my father would understand my decision to follow what makes me happy, the same way he does what makes him happy, which is collecting coins."
The above is the template that you can use to write your essay to make your argument as to why you cannot do what your father wants you to do.
