- That's how phone numbers work, the most significant part of the number is first (<country-code> <area-code> <local-number>) so the most significant part (TLD) should come first in domain names. Users like systems that look like other systems they are already used to.
- <tld>.<domain> would help thwart phishing attacks as most users read left-to-right, so they see right away when the domain is incorrect. Compare this to "google.com.phishing.com" which tricks users because they stop reading after they see "google.com..."
- When you read or hear "go to com.myawesomedomain" you know a domain name is being mentioned as soon as you hear "com.". It is not always obvious otherwise (you have to use specific language like "browse to").