As previously mentioned, the use of expletives can be a powerful tool - in the right circumstances. For me, the use in this poem makes you sound petulant stroppy. Your words would have had more impact without the expletives, showing a level of control and maturity that it sounds like you were aiming for...

Take care with the words you use and when and how you use them. You have a good enough vocabulary that should preclude the necessity for you to revert to crudity to get your point across. You are a good writer; believe in yourself and your language skills :-)