Bing is the DEFAULT search. You can still surrender privacy to Google as opposed to Nokia or Microsoft. How would it look if Android used Bing? It's their engine and it's only fair it uses it. What vote of confidence would it be for WP to gave default Google?

And, personally, I use both because Google has larger idexes, but Bing doesn't disallow my use as a scraper.

Why do people feel the need to separate in red and blue teams and kick each other? Why one or the other? Why not the best of both worlds?

And why insist in calling other's choice third rate? Did it ever occur toy you that other people's needs could be different? It has downsides and upsides. If it didn't, you's be crying it was a poor copy and they work together and they stole the indexes and and and. Oh wait.