Rock music vs Classical music

People who listen to rock music and others who listen to classic music have so different ways of thinking about music, but also they have similarities.
First of all, both are music styles and have similar chords and rhythms. Rock music is louder and (usually) faster than classical. However, classic music have more variety of sounds than a rock band normally use. Another similarity is that both use string instruments such as violin, guitar, etc. A last contrast between this two music styles is the different kind of people that listen to it, usually people that listen to classic music are parents or people over 40 years, why? Because this is the style of music that they used to hear in their adolescence. The people that listen to rock music are usually teens and under 30 years, both have different styles of clothes. Although i said that, you might be surprised knowing the style of music that some people listen to. For example, my housemate´s father loves hardcore music, it´s just amazing!