I do not listen Heavy metal music very often, but it is still better than country music. 
I don't know, I think I like country music better, at least some of it.  Heavy metal seems to have originated in the United Kingdom inn the late 1960s
Yes, it has roots in blues rock, psychedelic rock, and acid rock.
Maybe I don't like it because their lyrics and performance styles are sometimes associated with aggression and machismo.
Not always. Led Zeppelin, Black Sabbath and Deep Purple  are my favorite, they have a good lyrics.
Maybe, I don't know them very well, but I've heard of them, of course, as weel as from Iron Maiden and Saxon.
I like Iron Maiden, They have a good songs, like "Fear of the dark".
Iron Maiden
Iron Maiden are an English heavy metal band formed in Leyton, East London, in 1975 by bassist and primary songwriter Steve Harris. The band's discography has grown to thirty-nine albums, including sixteen studio albums, twelve live albums, four EPs, and seven compilations.
Pioneers of the new wave of British heavy metal, Iron Maiden achieved initial success during the early 1980s. After several line-up changes, the band went on to release a series of UK and US platinum and gold albums
Blues Boom of the mid-1960s: "I want to restore the Blues to the Top 40 in this country, where it belongs… All modern music is in debt to the Blues… there is no reason why it can’t be restored to the popularity it once had."
Speaking further to Classic Rock magazine, Petit elaborated: "I embrace the concept that the blues has to change. Heavy metal, progressive rock, death metal, shred, emo… it all has its roots in the blues….there’s