If you neither assume that all cases of depression are due to chemical imbalance, or that nobody ever encounters a real problem in life that causes them genuine suffering, then why do you say that depressed people should stop looking for solutions? If it is considered unacceptable for an AGI to "solve" humanity's problems by wireheading us all with drugs to provide us with counterfeit utility then why should it not at least be considered acceptable for depressed people to seek a solution that is not an SSRI? Depressed people are conscious beings who have a need for meaning just like you do.

Also, if you weren't aware of this, anti-depressant drugs are frequently ineffective. It's common for people to have to try a whole bunch of them, and some never find a drug that works.

Please consider being nicer to people who are having a miserable time.