I don't know if heaven really exists, but I remember one time writing a letter to my mom during Christmas, pretty respectable lady, who had died of cancer a year prior I believe, she was a teacher in Mexico, she taught many kids how to read and write, so I'm assuming she went up there, so I placed the letter underneath the Christmas tree and awaited for an answer, the next day I went to see if she had responded, surprisingly there was a paragraph long response, since I was a kid I thought she really had written it herself, but I have a feeling that uncle of mine whose a very religious catholic wrote it himself to make me believe she had written it, he did make it very obvious by crying over his own writing, after that I felt very indifferent about religion. We will never know if it does exist.