Your comments, more and more make it seem that you just have a problem with any sex scene at all in a series. Not really asking whether they were needed and had any actual importance to the plot at all.
And answering your general questions, because I didn't see them the first time. Yes, I do think sex scenes definitely have a place in modern television. There are some very intimate things that take place between two people during times like that. If a show refuses to show those moments audiences can lose some serious depth to those characters. And you can learn a lot about a character through a sex scene, that might otherwise take a long time to show. When creating tv shows time is important. And they need to tell as much as they can in as short a period as possible.