Should Porgy & Bess be part of the repertoire?

The Met HD Live broadcast of the Gershwins' Porgy and Bess was fun to watch start to finish and had some really find musical moments, in particular the PB duet (their only one in the opera I think!) "Bess, you are my woman now." Of course there are also the other arias that make this show so well-known beyond the opera world: Ain't Necessarily So, I Got Plenty o' Nothin', and Summertime, which actually opens the opera (and comes back in 2 reprises). Great performances all around, especially Angel Blue as Bess (Eric Owens, Porgy, was fighting a cold, as announced before the program, and he couldn't project as well as he might have otherwise - plus he blew a lyric). The crowd scenes are terrific and some of the more complex musical #s in the show; less successful, the various fight scenes, never really convincing to the the audience. The is by no means the most complex or challenging for 20th-century operas - at times it feels closer to music-hall reviews - but it's fun to see and hear an opera that draws so heavily on American blues and jazz. And, thanks in large part to HD Live broadcasts, it's great to see such a good-looking cast and a cast so well suited to their roles (though wonder if it's possible to cast someone with disabilities in the Porgy role?). Of course this opera always raises the issue of cultural appropriation: Is it right for a couple of Jewish guys from New York to write and compose a work about a Southern black community? (Thought exercise: How would I feel about Fiddler on the Roof, or Portnoy's Complaint, had either been written by a black man?) No doubt there is a degree of condescension and stereotyping - but there is also a great deal of love and sympathy: The characters, like most in opera on in tragic drama, are struggling to make a life, to find love, to endure. The Catfish Row culture is rough and crude, but also loving and nurturing and communal/familial. It's not exactly realistic, nor is it meant to be - but I'll go so far as to say creative artists have the right to depict cultures other than their own done with empathy and openness. Catfish Row isn't social realism, nor is it meant to be - but it's not exoticism, either, or at least not entirely so.