Would it be a waste of money for me if I was to buy these headphones for watching movies louder in my apartment so I can enjoy it better and for listening to other types of music such as rock, hip-hop, R&B, some Jazz and club music? I do not listen to classical music yet. So I want to make sure I purchase the right set of headphones.
I think it depends on what you have in mind when you say you want to listen to music louder. Do you mean you want to listen to music loudly without people hearing it around you? Then the answer would be no, because being open headphones, very loud volumes make them sound like a quiet-ish speaker system to people nearby.
If you mean can they play music loudly and clearly. The answer is yes, IF you have a headphone amp. My computer can't drive them super loudly on some songs due to their high impedance, but of course with a headphone amp you should be able to go louder than would be healthy (at least that's the case for my dac/amp).