If you depend on Gmail for your email communication, but you're tired of seeing ads in your inbox, there's a simple way to get rid of them, though it may mean swapping one problem for another.
To skirt around the ads, you must disable the Promotions, Social, and Forums tabs. That’s where it gets a bit tricky. If you depend on the Social tab to keep you updated on your various social networking feeds, you’ll want to keep that enabled, but doing so will not prevent ads from showing up.
TLDR:
No friends, no problem!
Tl:dr