For the same reason you'd want removable storage on your PC (i.e. flash or writable CD/DVD).I don't understand why everybody is so fired up about this.
I went through 5 stage of grief because of this
Denial - Everything is rumor, right? Googling... No SD, ignore.... Googling... No SD, ignore... Googling... SD, hope!
Anger - Then I saw the full hands-on videos and picture. WTH/F/D?!!
Bargaining - Should I buy it? If I buy it, I will have to back up on my computer. I cannot reuse my current SD & its content. If I don't, I don't get to use ICS first hand but tons of bloatware....
Depression - Maybe I should go with RAZR... Google... WHY!!!
Acceptance - Well, I can live with backing up on my computer. I can live with transfer content from my old SD to computer to GN. Whatever. It's sleek and cool, and definitely a step up from Droid 1.
@gnipeh: your 5 stages sound familiar! Except for the last on (acceptance). Not there yet.
I was very disappointed so see the final SD answer is "no". NFC "beam" would be great (unclear whether the S2 has it or not) -- but I use my removable SD for backups when traveling (so the backup is NOT lost if the phone is lost) and for sensitive data I might want, but not resident on the phone. The cloud is not always available, nor fully trustworthy IMO.
Is there a way to use a USB flash drive as a workaround? Clumsy though.
I don't think you can use your phone as a host for a USB drive / external hard drive. Correct me if I am wrong (which I desperately hope so), but mobile OS development teams don't seem to like that idea.
But as far as I know, you can encrypt your phone's data (see below), and back it up when you get to a stationary machine.
Ice Cream Sandwich makes tough security taste better | The Download Blog - Download.com
I am also quite sure there will be external hard drives, which support "beam" file transfer in near future.