this was a question i can remember asking as a child. I never got a satisfatory answer ( you think that might have set alarum bells ringing but there you are) the answer i got was " apostates belive werid things... they are out to destory your faith!" Which didn't seem to make too much sense
For any lurkers here asking the same question, here is the real answer... Apostates never go back, because they have found out that its all false! And why would you go back to somthing thats false???!