Yeah, indeed these antipsychotics are being prescribed much too readily. I think one shouldn't take dopamine antagonists at all unless when you have a serious psychotic disorder that actually responds to them (there are quite some psychotics who take Zyprexa and it does nothing or even worsen the symptoms, auditory hallucinations are listed as a 'common' side effect!). Anxiety and depression definitely aren't indications for anti-dopaminergics, I'd say they should rather be contraindications.
Some psychiatrists don't know fuck about neuroscience and believe in whatever the pharma lobby tells them. I've been prescribed Seroquel more than once at up to at least 600mg/d, and all it did was inducing horrible side effects - tachycardia, vertigo, orthostatic hypotension, intense restlessness / akathisia accompanied with anxiety is what I remember. Quitted it cold turkey when I managed to got out of psychiatry - well, had some nice euphoric days thereafter.
No, antipsychotics won't rescue anything. Unless you're really psychotic, the best way is to take nothing and let your brain heal itself naturally.