Cut short? No, IMO, it's outlived its original design plan.
Should we abandon space entirely? Fuck no...and I'd love to see the shuttles be used to haul components for a REAL space station into orbit...a space station where, not only could we continue to perform beneficial experiments, but also that could be used as a launch platform for interplanetary exploration.
There's no gawd-damned good reason for us to NOT send an expedition to Mars...or beyond.
Of course, I've been "told" since the early 60's that it would look similar to this:
Which may or may not be the best possible design with today's technology...but the abortion that is the ISS certainly isn't a real workable design...and should be abandoned once a REAL space station is built.
HOWEVER, that will cost money...and since the US is having so many financial difficulties as is, it will never be built...by us anyway.