OK, he may not be as conservative as the other four, but I think he is more often than not a conservative.
I can say the same thing about Beyer and Kagan, except that they tend to a bit more to the left of center as Roberts is to the right. Further both Ginsburg and Sotomayor have moved to the left.
If we appoint a liberal we get a liberal majority. Is your argument against Kavanaugh that you want a liberal majority on the Court.
While it is true that I don't want a conservative Court, that wasn't the point of my response. I was answering the thread question as to the underlying issue with regard to Kavanaugh, namely that it would change the makeup of the court and do so for a long time since the more conservative members are young enough to be there for a very long time. That should be a no brainer.