Sound nice but it is asking too much detail for simple account.
Signing with facebook or google email will completely destroy your personal privacy and your addresses will be linked to your name, bitcoin is not meant for that

I am happy to store my addresses in piece of paper to remember or share online.

A mail is too much details?

I think you guys don't understand the purpose of this service, but there is confusion like every project recently launched, like bitcoin in 2009

You'll understand by taking the place of websites, developers and influenceurs.