We have been on both sides of the fence. We knew the sex of our other children before their births and it was great for planning purposes. Before we were ever pregnant with our youngest child, we decided that we did not want to know what the sex was before he was born. I purchase all white and yellow clothing and we did a very neutral nursery theme. Our doctor was very surprised that we didn't want to know the sex as we had struggled for a period of time to become pregnant. He decided to go along with us and not find out the sex either. When our son was born the doctor faced him directly to my husband and let him tell me, "It's a boy!". Not another moment in my life will ever be so special as hearing my husband say those words with his voice cracking with sheer emotion and seeing his face and the tears of happiness in his eyes.
My wife and I did not want to know what sex our baby was prior to being born and we're both glad we made that decision but that's just us.
If you want to know, no big deal and as was said, the technology is there, use it if you want to.
Who cares if someone wants to know the sex of their child while in the womb. It's the parent or parents decision and should be no other person's business. The technology is available, so use it.
Good human interest story, that should have a large audience. However, I am not sold on the "Other benefits to knowing include being better prepared for events after the birth, such as scheduling a bris, forming a deeper connection with the baby and making sure that everything is OK medically, according to parents.com." I just don't see how knowing the sex will change any future scheduling, the personal connection to the child, or making sure that everything is OK medically.