My wariness with respect to the PSR are these two features: 1) The PSR is typically defended empirically. That is, the reason for believing in the PSR is usua

My wariness with respect to the PSR are these two features: 1) The PSR is typically defended empirically. That is, the reason for believing in the PSR is usually some form of "we observe that things happen for reasons." 2) No process is ever provided for determining whether or not a particular reason is actually sufficient. Taken together, 2) says that we have no justification for believing that any of the reasons we observe in 1) are actually evidence for the universality of sufficient reasons posited in the PSR.