When I talk to people about recumbents it strikes me that it is like discussing religion, music art and so forth. If the person you talk to hasn't got a recumbent there is absolutely no need for persuading him that a recumbent is a far better vehicle than an upright. Not even scientific proofs of the matter would persuade him. Because you can't persuade a muslim that an uncircumcised woman is more desireable than a circumcised one. A muslim would never understand why you should choose an uncircumcised woman for marriage. A Hank William fan would certainly not change a CD of Hank Williams for a CD of Brahms or Mozart. Classical music is not his kind of music.
Very few people like recumbents in comparison to those who like uprights. But those who love recumbents can not think of any upright alternative, because for them there is no alternative anymore. The recumbent has come to stay in their life. So the question which bike is best a recumbent or an upright is entirely a question of taste tradition and belief.