Yikes. You make some pretty strong claims that are not credible on their face.
1. "Not adaptive in any situation..."
Putting aside the many problems with evolutionary psychological explanations (just-so theory, underdetermination, so-called disjunction and grain problems), there's actually an very strong argument to OCD's adaptive role, both at the individual (threat response) and group. I think the group argument is most compelling, as various degrees of neuroticism have very high upside for risk management over time.
Or take depression for example. It can serve, theoretically, to reduce risk of conflict and death when social hierarchies might be in flux, it's a way to honestly signal a problem to ones group, it could be a mechanism to accurately try and signal a problem to oneself like physical pain does, its been theorized to potentially reduce risk of infection, etc.
2. These genes very clearly do not weed themselves out of the gene pool. In fact, mental illness has been on the rise, probably mostly because neurodiversity has been increasingly pathologized. The social construct in which these are considered disordered is hugely important.
3. Your comment about that empathy snp is extreme genetic essentialsm and determinism. Moreover, it's a single snp. I don't know of a single researcher who'd claim that something as complicated as empathy is either toast or not toast from a single snp.
Like all evolutionary psychology you can argue forever about the 'adaptive value' of any behaviour and characteristic and never know whether what you're saying is true or just completely and utterly wrong. It has a reputation for a reason. I could make a list full of hundreds of reasons why depression might be adaptive - that it's so darn easy should serve as a warning why it's often a bad idea to theorise like this.
1. "Not adaptive in any situation..."
Putting aside the many problems with evolutionary psychological explanations (just-so theory, underdetermination, so-called disjunction and grain problems), there's actually an very strong argument to OCD's adaptive role, both at the individual (threat response) and group. I think the group argument is most compelling, as various degrees of neuroticism have very high upside for risk management over time.
Or take depression for example. It can serve, theoretically, to reduce risk of conflict and death when social hierarchies might be in flux, it's a way to honestly signal a problem to ones group, it could be a mechanism to accurately try and signal a problem to oneself like physical pain does, its been theorized to potentially reduce risk of infection, etc.
2. These genes very clearly do not weed themselves out of the gene pool. In fact, mental illness has been on the rise, probably mostly because neurodiversity has been increasingly pathologized. The social construct in which these are considered disordered is hugely important.
3. Your comment about that empathy snp is extreme genetic essentialsm and determinism. Moreover, it's a single snp. I don't know of a single researcher who'd claim that something as complicated as empathy is either toast or not toast from a single snp.