If I'm honest, I hope Google allows people to opt-in to having their data saved for longer.

I don't believe Google is evil, and while I know they will make more money out of me by keeping my data for longer, I'm sure more of my data will help them give me an improved experience, if only by a little. Why should I care? After all, I've been happily giving it snippets from my daily life for years, it's not as if they're getting anymore than they've already had in the past...