It seems to me that, although we see lots of Sicilians, especially Najdorfs, Tajmanovs, and Kans, the once popular Scheveningen variation (1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 -- or 2...e6 and 5...d6) recently lost a lot of its popularity at top level chess. Nobody seems to play it any more even at club level chess. Is there a clear reason for that?
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1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6