Why do non-believers get so upset...?

why do non-believers get so upset when Christians ask ques. to fullfill their own curiousity on athiest beliefs. what i have got so far is nothing but ridicule. no answers. i can answer ALL your ques. on my beliefs and where they come from, so why are you offended when i ask the same? i also hear that it is too hard to explain and i need to go to school and blah, blah, blah! well, i've been to college and graduated with honors and never did i learn in school the beliefs of an athiest, so i ask all of you on here. when i am asked ques. on my faith, i kindly give you answers because i am privilaged to inform you about our Father. why do you become upset???