Hi Johanna,
Far from being paranoid, it is good common sence and good preventitive maintenence.
Anyone who doesn't have a backup/recovery strategy soon gets religion once they suffer their first system crash and can't get back into windows. If you don't have a plan then you plan to fail.
The loss of addressbook, emails, bookmarks, documents, images, music, program settings, tweaks, windows updates, hardware drivers, etc. etc. built up over months and years, really know what pain is! What cost an ounce of prevention compared with, fdisk, format, reinstall OS, programs, drivers (have you still got those old CDs, program keys, etc?) all from scratch. This kind of major loss is all the more likely when all your data is in the same partition as windows.
When your HDD is partitioned for efficiency and maintenance, defragmenting is much less of a hassle. I think it was RejZor who posted a link to download a small defrag program that goes like the wind by comparison to te default windows defragger. So it is even less of a chore and when done as a regular task even easier.
I usually do a weekly pc maintenance job (about an hour, hardly what I call being a slave), starting with deleting all internet and other temp files (if you want to kep something then it shouldn't be in temp), a boot virus scan, defrag my 2 HDDs before doing an image backup copy (of my C and D partitions on drive 1) saved onto my drive 2.
I also do a daily backup of volatile data, docs, OE .dbx files, addressbook, favourites, etc. (this takes about 30 seconds) using a small program called mirror.exe and a batch file I created.
Call me paranoid if you like, I don't give a stuff. I have a system that runs well and I have peace of mind, knowing I don't have to start from scratch should the worst happen.
I am sure that Shogh, was not making a personal comment, rather a general comment more related to his later post about, you rule the computer not the other way round.
Other people also took your point that it is beneficial and considering at the time of typing this there had been 462+ viewings of this thread and that was the only one that could be considered negative.
The removal of the information (thought paranoid

) will only be a loss good general advice for those coming behind.
David