Are you saying that Google should do what Yahoo and Outlook, some of the worst major email-capable sites, do?
But at least they don't ask for it so often, just the first time. Google keeps nagging me about it, same with FaceBook.
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"Couldn't care less" is the phrase you probably meant.
No I'm just saying that asking for a phone number isn't out of the ordinary and yahoo hits me every so often asking me if I want to set up security with my cell phone.