Isn't It Just a Little Bit Funny?

I think its ignorant for people to say that their religion and only their specific religion is 100% correct; its illogical- how can my religion be completely right if there is something wrong with every single other one. I consider spirituality (NOT "religion") an important part of my life, but I honestly think that its a little different for everyone. Personally I don't see how any religion can be totally correct since technically, religion is a man-made concept. I think its funny how some christian sub-sects do argue like that, meanwhile Christianity as a whole is not really so different from Judaism or Islam. Religion is an interesting (and yes, sometimes frustrating) thing!