First, Sweet moustache. Second, If one rejection letter is all it takes to derail you, you probably should not be in the biz. YC is not the arbiter of success

First, Sweet moustache. Second, If one rejection letter is all it takes to derail you, you probably should not be in the biz. YC is not the arbiter of success, you are, and getting rejected probably just means that you need to polish things up and spend more time on the product. I'm glad you didn't stop, looks like you guys are doing just fine.