We know about the laws that allowed this.

If you don't want to be tracked and you don't want to use Google+, stop using Google products.

Google does not sell data to anybody. They sell advertising slots.

Employees at Google are not tracking you.

Programmatic algorithms on some Google properties are processing your data to show you the most relevant content (search, G+ posts, mail, news etc) and advertisements. There is a big difference between this "tracking" and the kind of snooping that spy organizations do.

By the way I'll be surprised if all spy organizations and not just NSA aren't trying their best to get more information on certain people from wherever they can.

Their business - like that of most tech companies - is built on data (so is every business to some degree) they can't forgo data, that is stupid. If the NSA is your main concern then it's government policy you want to be changed, not the engineering decisions of private companies. Also worth mentioning that unless you're speaking of telecom companies there is no profit motive to cooperating with government but mainly legal obligations.