Good post Holysatan . You pointed it out very clearly. I also used to ride without rearview mirror in my college days infact we all do all sort of things in college, right ?
Removed the other mirror at that time and the bike has been mirrorless since then. 3 years if I am remember exactly.
It was initially difficult during on the highways during the initial days but then, I have got used to it now.
When driving inside Chennai, i very rarely find the need for one.