Google has recently announced My Account, which is a page where you can control much of what happens when you interact with Google - even if you don't have a Google Account. You can tell Google that certain types of advertising are of no interest to you - for example, I killed off sports and several other categories. There's a privacy checkup that quickly shows you everything related to Google accounts. There's a lot more - it will take you some time to go through it all, but it is time well spent.
I enabled automatic email response if I haven't logged in for three months. That can be set as long as 18 months if you wish.
Should your account become inactive, you can have Google notify up to ten people and optionally give each one access to your Google data such as email and photos.
With or without that, you can have all your Google data deleted after your account timeout.
Of course, you can download your own data any time you want.