I married a stranger from the internet for visa purposes and she has changed my life (in a good way).
3 years ago I was depressed, single and stuck in a rut. I hated where I lived and needed to change something. She made a post on /r/IWantOut offering passport exchange. I messaged her with my offer and we got married 3 months later. That was 3 years ago. Turns out we're pretty damn compatible and have sex and everything...
So, we're no longer doing the passport exchange and we have been living in my original country and I no longer have interest in moving to hers. We're moving to Berlin in a few weeks for about a year, then onwards to our final destination, Barcelona.
I've been to so many places I never would have gone to before, and completely transformed my lifestyle. Now I can live with very few possessions and be ultra-portable, whereas before i would have cringed at the thought.