Absolutely yes, I don't think there are many resting in the dessert. The 737, especially in it's later varients (like the larger NG
's), the A321 series, the lower ops costs of them along with the economic woes of USA airlines meant it had a declining demand. Yet, if you need to get a lot of people from airports with limited space (LGA
) or to serve points within the USA or to/from the USA to smaller markets in Europe, then the 757 was an excellent choice.
As noted above, perhaps in the next few years Boeing or speciality contractors could do an upgrade program, like done with DC-8's, DC-10's, to install more efficient engines, add winglets and update the cockpit systems.