Hi there! I really don't think it will occur to anyone that it's strange your child has the name
Kirsten when you aren't religious. I think the only time people might wonder is if you named your son
Jesus or
John the
Baptist or something but weren't religious, and they might be mildly surprised if you named your daughter
Mary but weren't really religious. Not
Kirsten though (or
Christopher or
Christine). Good luck! :o)