Well I personally liked Metallica's older stuff. It was more aggressive, raw, and powerful. Yes they got refined as they got older and their sound changed, but that was their decision. Bands are allowed to evolve as they want. It is your choice to remain a fan or not. Music is in the ear of the beholder, I personally would rather enjoy a thread about recommendations instead of, they were better then , they suck now etc........ If you hear something good , then pass it on !!
I must also admit that my tastes have evolved. Back in the day , if it wasn't METAL it sucked. When my brother first started listening to Rush , The Cure, Smashing Pumpkins, etc.... I was like, This isn't Metal , it sucks. Little did I know I was being ignorant and by listening to other bands , in different genre's it allowed me to progress as a musician as well as a person. Now I listen to all kinds of music. Except for C - Rap , and gangsta garbage. I can't wait till that musical genre dies , and they move on to something more creative. Don't get me wrong , I love stuff like Outkast , things that are not the norm.