Why do I need a ubuntu one account to download apps topic

While the usual tradition of linux distributions is to have repositories accessible to anyone, why do I need to have a ubuntu one account in order to download apps on the ubuntu store? While ubuntu has until now been very strong into providing open alternatives to mainline products, e.g. from microsoft or apple, this requirement is a serious threat to the open philosophy. I can't see any technical difficulty into not having accounts on the server side, and I am very worried about this.

[ubuntu] Can't find Ubuntu 64 bit installation download for USB topic

Does anyone have any info reguarding a 64 bit Ubuntu Installation
that I can download and install on a USB stick.

I'm not really sure how to ask this question.
I want to install Ubuntu 14 on my 64 bit computer.
I wish to install Ubuntu to my computer from a USB stick.

I've already made a 32 bit Ubuntu USB installation stick.

Where can I find the 64 bit Ubuntu to make a USB installation stick?

I'm still not sure if I am asking this correctly.