If you make the backup yourself from your own copy, and use it for yourself, why not?
I also agree with many of your points of how protection disadvantages the buyers.. I have found with afew CD's i've bought lately i can only play them on my computer via a player which is installed from the disk. This player has hardly any options and i have to try and set an equalizer through my nforce 2 sound CP.. it doesnt end up sounding quite as good as winamp and the bass is really unclean. but what i can't stand is for some unknown reason, this player uses 100% of my CPU power when open.. wtf? i can't stand it. I bought the CD, why must i be disadvantaged because of pirates? I can play it in winamp, and rip it if i wish.. but there are sharp rips in the sound every 10secs or so.. not noticable as long as the songs volume is loud, but i'd rather listen to it like this in winamp that use the player and nforce Eq with dirty un-constant bass.
A bit off the topic of games ;p but something i have been annoyed at lately none-the-less.
__________________Q9550 w/ Thermalright Ultra 120 Extreme | 4GB Team Xtreme Dark 800MHz CL4 | Gigabyte X48-DS5
ASUS Radeon 5870 | 240GB OCZ Vertex 2 | 1TB WD Green Power | BenQ V2400W 24" LCD
Corsair HX-1000w | LG GGW-H20L 6x DL Blu-Ray Burner/HD-DVD Reader | Coolermaster Cosmos S
Acer TravelMate 4002WNLCi: Pentium M 725 @ 1.6GHz | Mobility Radeon 9700/64MB | 2GB DDR400 | 15.4" WXGA