There's no question that it's been a good investment, particularly if you bought at the right time.
If only but in sadness I would say I haven't, I never bought at that time for the same reason I don't know about it and never heard of bitcoin in 2010. I think that is just what it is and it won't change the fact bitcoin will never be a success if no one is ever supported it and no one will care to even give attention to it. And that would be the greatest regret anyone will have to face.