sicilian scheveningen. why played so much?

just to clarify it is not a bad variation of the sicilian and it's really good. however when i see people post sicilian nadjorf games on the forums or if looking at an archive. i see that the scheveningen variation is played a lot more frequently. 

it's not a bad variation it's just that it's played significantly more (among chess.com players not masters) than over lines.

so for people that play it why does this.

appeal more to you than this?

The Scheveningen according to Wikipedia and Burgess is 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6. I think what you have is the Najdorf to move 5, which then returns to the Scheveningen line, at least that's what Burgess says. He indicates that the move order you show might be the best because of the Keres attack. But we need to get the names correct, it's confusing enough already .

A Scheveningen player just told me off for using the Najdorf in the game analysis forum, saying the pawn structure was too rigid. But I don't really see that...

that scheveningen player has no idea what he's talking about. the najdorf is one of the most respected openings in chess for good reason.

I doubt that Scheveningen is played "a lot more frequently" than Najdorf.   However, the Scheveningen pawn structure is solid while in the position #2 black has a kind of weakness on d5.