According to Jewish law, you will always be a Jew albeit a "naughty" one.
There is a Yiddish expression: If you're eating pork, let it drip from your beard.
You are a Jew. Period.
It's an expression, for Christ's sake! LOL!
Tell the frummer Yiden you're an apikoros!
I was raised Jewish. So let us ask, Am I still Jewish???
I am NOT Jewish in the sense that if you define Jewish as a religion, the the fact that I do not do Judaism (or any religion) makes me NOT Jewish!! And "Jewish" is just a label I was taught to have in order for my parents to avoid feeling too guilty due to the possibility of not teaching me to have the label they were taught to teach their kids to have. You do not do any part of Judaism, so you are not Jewish!!! Now you need to find a life and find fun activities and hobbies and stop obsessing over religion and culture and the fact that you are an atheist and you used to do Judaism and catholicism and so on.
I do not have time to care what labels other people need to call me by (in order for them to avoid feeling too guilty or bad due to the fact that I don't participate in the religion/ culture I was taught I have to participate in and have my life revolve around) and you shouldn't care either.
At least two people at atheist events asked me whether I identify as a Jewish atheist and I replied, no, I do not identify as a Jewish atheist, I identify as Michael.
You got your sons circumcised? That was a very evil thing to do to your sons. You did not not know any better. You do now.