Digging deeper

Is it lust or love? testosterone? 

is it simply the fact that it feels good and it just rocks their socks!?

or are they subconsiously thinking they need to reproduce in order to pass on their genes to as many offspring as they can?

Thinking back on conversations i've become irritated by, friends i've yelled at, and things i've become upset with, it becomes clear to me what i'm doing when i get angry. More often than not, i use people's actions and words as a channel through which i can indirectly yell at myself.