TL;DR at the bottom
I'm Jewish. there is no debate here. My mother is Jewish so I am Jewish. But my father (not Jewish) is an anti-religion Atheist, banned all religious practices in our house (except celebrating Christmas as an American thing in a non-religious way), and raised me an Atheist. I don't know whether I would consider myself atheist anymore. I don't definitely believe in G-d or anything supernatural but I also don't believe it is 100% certain that G-d/the supernatural doesn't exist. Since coming to college I have become very involved in my university's Hillel. I love it there. I love the Shabbat services. I love the people. I love the community. I joined a Jewish learning fellowship last year and was in a Jewish book club. I was never connected to my Jewish identity growing up (though I knew I was Jewish because of my mother) but now I feel that being Jewish is an important part of who I am. I want to be more involved. I want to go to synagogue. I want to read the Torah. I want to celebrate the Jewish holidays. But I don't believe in G-d. I don't want to offend anyone or be mocking Judaism's practices and beliefs. Also on a related note can I wear the Star of David necklace?
TL;DR I'm Jewish by birth but raised Atheist and still don't believe in G-d (but not 100% sure G-d doesn't exist). Can I practice Judaism/do Jewish things and participate in Jewish life or would that be offensive/not ok?