Making a Case for Digital Analytics

Why would you need to look at when the hit were (what day, what time of day)?
Why would you need to look at if the hits were following or prior to an email blast?
Why would you need to look at if the hits were following or prior to a press release?
Why would you need to look at if the hits were in your target region?
Why would you need to look at if the hits came from social media, Google, Bing, an email, or direct?
Why would you need to look at if the hits were on a mobile phone, tablet, or desktop?
Why would you need to look at the screen resolution of the users?
Why would you want to know the if hits came AFTER an email blast versus FROM an email blast?
Are there any metrics missing from the list? What other metrics would you like to see?