I agree. But with the calibre of members on the forums these days with apps floating around like one click root, and perm root thru visionary has decreased severely and as a result some may not be as comfortable as you or I.
Nandroid has saved my Bacon on more than one occasion.
Also every one who purchased the device on launch is still within their return period, many have not made up their minds whether or not to even keep the device (i know I will, I may have to still swap mine out however...) and don't want any difficulty returning (or swapping) the phone.
Sent from my HTC Glacier using XDA App
ROM: Iced Glacier
HTC Nexus 1:
T-mobile G1 Black x2 +1 white (warrantied out waaaay to many times)
*used for PSFreedom/XBMC remotes*