For those that are not finding out gender

Kelsey • Happy Mama
I have my 20 week anatomy scan today. I have been pretty confident in the idea of not finding out the gender till birth but I'm having second thoughts.. this will be our first babe, and I guess I'm just looking to hear different reasons as to why you're not finding out. Let me hear it!!!
UPDATE:
We had our scan and decided not to find out:) and in glad we didn't. Thanks for your responses ladies!!