While I don't live in NJ, I really like the Secaucas Jct. Station (and I just used it this week). I see your point Alan, that commuters don't care about the expensive marble etc. but I personally like it when things look nice and stylish. The JCT. is a really really well designed and pretty station, I love using it!
I don't dislike the station itself and I agree it does look "nice and stylish." But I'm sure that they could have still managed to achieve nice & stylish without importing marble from Italy for it, and for 7th Avenue for that matter.
However my bigger problem with Secaucus is the fact that once the new tunnels are built under the Hudson, it will see very little use. Other than people wishing to transfer from the Bergen/Main lines and to go west on the NEC and vice versa, this huge station will go largely empty. No one is going to endure a forced wait of at least 5 minutes, multiple escalators, turnstyles where you have to insert your ticket, and give up their seat on a train to transfer to/from the Bergen/Main to NYP.
They are going to board the trains that will run directly into NYP from the Bergen/Main lines. Some will even board and stand on a full direct train, rather than endure the transfer.
And Secaucus Junction will largely become an unused monument that sees only a handful of passengers each day and an expensive albatross around NJT's neck to maintain and heat/cool. And people will come to hate it thinking of all the other wonderful projects that could have been done with the money that was poured into a station that saw 10 minutes of fame and glory.