  Since the discovery of the first radio pulsar fifty years ago, the population
of neutron stars in our Galaxy has grown to over 2,600. A handful of these
sources, exclusively seen in X-rays, show properties that are not observed in
normal pulsars. Despite their scarcity, they are key to understanding aspects
of the neutron star phenomenology and evolution. The forthcoming all-sky survey
of eROSITA will unveil the X-ray faint end of the neutron star population at
unprecedented sensitivity; therefore, it has the unique potential to constrain
evolutionary models and advance our understanding of the sources that are
especially silent in the radio and $\gamma$-ray regimes. In this contribution I
discuss the expected role of eROSITA, and the challenges it will face, at
probing the galactic neutron star population.
