To find out or NOT TO

So tomorrow is the big day.....the big ultrasound day. I am now 20 weeks and Brent and I have been debating whether or not we are going to find out. Brent thinks it would be so fun to keep it a surprise because we already have boy and girl stuff. Me on the other hand, well I have lost all spontaneity and find it hard to not know. I just feel like I connect more and so does Brent if we know what we are having, but I've never not known so I can't compare. So I thought I'd post on here and get your opinion. What have you all done and what have you liked????? Should we find out or not?