I hide my taste in music around my friends and family
Do you have any strong reasons why you hide your music taste with your family?
I don't want to let my parents and friends know that I like listening to Heavy Metal music.
There's no reason to be shameful about what you like. You should be proud of what you like and share it around, and if they don't like it, tough luck. Other people's opinions shouldn't dictate your personal favorites.
But heavy metal is so much more than just music, it's culture and lifestyle.
We may not align with what we prefer in music, but I can tell you're passionate about it and you're not harming anyone and it is your right to listen to what you want and in embracing their culture and lifestyle. Your family will not be bothered by this, so it is okay for you to tell them.