I respect team green, and I was actually leaning towards it myself. I really wanted to avoid if I was having a daughter for her to be inundated with pink garbage. I hate the color pink, I never liked princesses, or any other girly stuff (really I can show you pictures of my 2 year old self clad in blue surrounded by pound puppies) and wanted to avoid that kind of thing for my daughter. As soon as I was pregnant, my in-laws were hoping for a little princess and planning a pink nursery and it felt totally out of control.
However, I just wanted to know. You read about so many things going wrong, I just wanted to make sure that he or she was going to be ok, and if something was say a little odd (yes I know it's only 4% of the population) I wanted to be ready for it. When we found out we were having a son, we were really, really happy. We're not doing some big gender reveal party or any of that, we just wanted to know. The best news though was that all of the chromosome problems, and Down's, spinal bifidia we no longer had to worry about.
With all things wedding, baby, and life related I try to stick to a "to each their own" mentality.