How to translate/understand "还不" in "还不是因为爱" Just realized that the 还不 part of speech in phrases such as "还不是因为爱", "还不都怪你" is quite tricky. How do you translate it into English?
It's translated as “actually", "really", "just"; it is used to show your emphasis. It's a very tricky expression because it has no negative meaning, while it has a negative look (不).You usually use this word in a sentence as a response to show your disagreement with the speaker.

You and your friends go hiking in a big mountain, and you get lost. Fortunately, you have a GPS device, and it helps you get out of the adversity. When you are safe, one of your friends says, "Thank goodness!". You would say,


  这还不是因为我带了GPS导航仪。= It is really because I took the GPS navigator along.


Here, You imply that he should thank you!Not thank goodness!.

And another one would say


  还不是我叫你带上的。=It's I who asks you to take it along.


Now,he wants everyone to know that they should thank him :)


  还不是因为爱。= (It is) really because of love.


I also want to show you the negative form of this expression, you would say:


  这还真不是因为爱。= This is really not because of love.