Being an atheist, I'm not very likely to help you with your arguments, since I don't find any of them convincing.
However, I do have one unrelated question.
You mention that you are 13 years old yet you also speak about 'discussions with people in [your] work place'. What kind of work is this and how is it that a 13 year old is legally permitted to work?
------------------
He hoped and prayed that there wasn't an afterlife. Then he realized there was a contradiction involved here and merely hoped that there wasn't an afterlife.
- Douglas Adams, The Hitch Hiker's Guide to the Galaxy