It all depends. If someone comes from a culture that does not do it, I have no problem with that. For me, circumcision is important and my sons have no alternative than to pass through it. In fact, boys often prompt their wazees when the time comes. The whole process including circumcision, counsel from wazees, new respect in the family setup and the camaraderie with age mates makes it a culture I am proud of. But to each his own (foreskin).
All my friends are heathens, take it slow. Wait for them to ask you who you know. Please don't make any sudden moves.