I'm really glad that you know and also, really even happier to know that you found your brother! That is great!! 
I'm with you on this one.
It is the cruelest thing that can be done to a person by not telling them who they are. They have every right to know and as you put it, it doesn't matter what it is. You just want to know!
And, yes, you are right again, today it is a lot easier to find out than it was in the past when people would say just about anything to be rid of you with your *questions* so to speak.
Best of luck with your research as it continues on ... mine likely will anyway as now I have some people that are contacting me (father's side of the family). Just recently I heard from my relatives in Ireland I never knew I had. They live in Kilkenny and they were hoping to find that relative "said to be on the west coast somewhere" that left Ireland during the Great Famine years.
Well, they found me and I have two new cousins that found me now, one in Massachusetts and one in New Jersey! 
Cheers! 
Edit history
= new reply since forum marked as read