I wanna argue Yoda's logic, but it's gonna lead to offensive arguing which isn't the point. I'm Irish, Italian, German (single digit percent-wise), and American. America is where I was born and raised, Ireland Italy and Germany are where my parents' parents and their parents come from. Those cultures and habits and religious views are what I was shown growing up, what I was taught. To make light of any of that would be a disservice to my family, but to ignore my own American standing would be a disservice to the country I was born in.
So I simply am one of those multiple different backgrounds when it's convenient. And in regards to barhopping, being Irish was the most convenient at that time.
And just for kicks, my family has been in America since the 50s. We're pretty young on the national list.
Edit: I also wanna point out that the beauty of being American is when I was old enough, any of those cultural habits I didn't like (religion) went flying right the fuck out the window. I respect my family's beliefs, but I'll be damned if I'm gonna follow them.