I've read where Vikings weren't as much marauders as travelers. Rowing up river and settling for a time, joining communities. I can't confirm the history, so I'll leave it right there.
Don't be ashamed of your heritage, too much of that going on in the world today. You are what you are, can't change that.
It is true what you say, many vikings where actually tradesmen as well not just crazy pirates, and they created trading channels connecting scandinavia all the way to the Black Sea and Caspean Sea. I think you are right , we are what we are, as long as we are happy with ourselves then we should be proud! Thanks for your comment!