Like I said, if you're not interested don't post. No need to be asking why anything is "necessary". The 1001 albums thread is too filled with indie stuff and stuff I don't know, so I wanted to narrow it down for metal heads and prog heads. Don't see nothin' wrong with that. Nobody's saying you have to participate. Plenty of other threads around.
Wait till you see my "1001 Country Albums you must hear before you die" thread...