sorry, but i won't try to convince you!
and honestly, it seems like you've made up your mind, so i'd say you aren't missing much!
seriously, some people like this machine, some don't. in the end, you've got to use what you like and what works for you.
to me, and i think to a lot of people, cloud computing is a promising prospect. do i think this google beta device is a smash hit? no. it has some work to do. but i and others like the idea. even before knowing that google was going to be doing a beta, and certainly before applying, i have been trying to move "into the cloud" (sigh, i hate buzz words). for me there are still a lot of shortcomings, but it's not as if the idea is finalized and the technology is no longer making progress.
i will say this to you:
it may seem now that you can't "work" or be productive in the ways that you need on a google laptop, or in the "cloud" at all. but i think in the - possibly near - future you may be surprised. that's why i'm supportive of this project. to me it is a push for progress in a slightly new direction.
rl