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.
the genre's evolution by discarding much of its blues influence; Motörhead introduced a punk rock sensibility and an increasing emphasis on speed. Beginning in the late 1970s, bands in the new wave of British heavy metal such as Iron Maiden and Def Leppard followed in a similar vein. Before the end of the decade, heavy metal fans became known as "metalheads" or "headbangers".
During the 1980s, glam metal became popular with groups such as Bon Jovi and Mötley Crüe. Underground scenes produced an array of more
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