[solost]

You say the only reason you struggle with the decision is because of the honor you feel in the validation of your work that Google is giving you by providing the job offer. Well if that is the only reason you haven't turned them down, then you have already answered your own question on whether or not to accept, don’t.

In your situation, based on what you have shared I wouldn't take the job. It sounds like you took the interviews to acquire the personal validation a job offer would represent to you and now that you have it, there seems no real reason to up root your life.

I hope my interpretation of the situation helps and I wish you all the best no matter what decision you may make.