If you found out in your adult life that you were kidnapped would you disown your kidnappers who raised you?

i would probably do that too and try to find your real parents

I guess it depends how they raised  you.  I had a great childhood, so I would be quite appreciative.   But I would go looking for my biological parents

On very few occasions are there people who kidnap children to save them from their original family

It's impossible to say without being in that position.  How you would react is probably totally different to how I'd react.