Dicks, usually. But that doesn’t mean we consider what they have to say.
Dismissing a philosopher’s entire system on the basis of his personal conduct is generally a foolish way to go, simply because very few philosophers weren’t world-historical dicks.
[e.g., “Althusser strangled his wife, Schopenhauer assaulted his neighbors, Heidegger was a Nazi, Paul de Man was also a Nazi, etc., etc.”]
Read more about Mehdi Belhaj Kacem dissing of his former mentor, Alain Badiou…if you care about this sort of thing. Me? I just liked the pull-quote.