I don't trust Google any longer. Google (usually) brings out fantastic products only to neglect and abandon them like a bored toddler.
This wave of product discontinuations is making me extremely hesitant to use anything new Google brings out. If Google brought out Gmail today I'd sign up and explore what it's about, but I wouldn't ever give out the email address for fear that it would be snatched back with no or little notice.
I'm not going to pretend to know Google's business better than they do, but to me it appears as though they're really dropping the ball here and losing a lot of credibility and trust.