The importance of lyrics

La Tanguera has already posted a most insightful post about tango and lyrics. I do agree with her, eventhough my mind seems to pay 90% of the attention to the music itself, lyrics do matter and they do influence how you dance a tango, that is, if you understand them.
This weekend, I was just preparing to go to La negracha when I friend of mine told me that she preferred Neotango to tango because she couldn't understand the lyrics of tango and as a person that gives a lot of importance to lyrics, she gets cheesed off. I don't agree with her because I think you can pretty much guess what the lyrics say by the sound of music (ie, if it is a melancholic track then the lyrics are likely to be hitting the same tone). But her remarks made me think of something very curious.
I have talked about Daniel Melingo's concert at the Warwick Arts Centre but I haven't told you a little story. One of my students came out saying "it was disgraceful that he was so drunk on stage, I mean, he started to take his shoes off and threw them around!". H didn't pay very much attention to the shoes part, and tried to tell him that it was probably him just being theatrical rather than drunk. But when I thought a little bit over the situation he threw his shoes off when he was singing "Muleta de Burracho", a music in which the lyrics go on about how he has a stone in his shoes and are hurting him making him unable to walk and look like a crippled. Obviously I can understand this while dancing and that will give me many more cues on how to interpret it in my dance but I wonder, how does it feel to people that can't understand it? Are any non-Spanish speaking tangologuers that feel they are not getting the most of it because they can't understand lyrics?