  The lifetime of protoplanetary disks is a crucial parameter for planet
formation research. Observations of disk fractions in star clusters imply
median disk lifetimes of 1 -- 3 Myr. This very short disk lifetime calls for
planet formation to occur extremely rapidly. We show that young, distant
clusters ($\leq$ 5 Myr, $>$ 200 pc) often dominate these types of studies. Such
clusters frequently suffer from limiting magnitudes leading to an
over-representation of high-mass stars. As high-mass stars disperse their disks
earlier, the derived disk lifetimes apply best to high-mass stars rather than
low-mass stars. Including only nearby clusters ($<$ 200 pc) minimizes the
effect of limiting magnitude. In this case, the median disk lifetime of
low-mass stars is with 5 -- 10 Myr, thus much longer than often claimed. The
longer timescales provide planets ample time to form. How high-mass stars form
planets so much faster than low-mass stars is the next grand challenges.
