Like what you said.. It is 8 years ago. Things changed, management changed, organisation changed, economy changed, I bet even your colleagues also changed. I'm sure when you accepted the offer 8 years ago, it was the best among the rest of the applied organisations after your careful consideration.

But you would not be able to anticipate any changes there after which may no longer make it the best organisation now. So don't look back. None of us know what is ahead, the best we can do is to ensure we have done the best we can now.