I support people taking antidepressants if it helps them.
But I have to say the "chemical imbalance" theory either means no more than "depression responds to an antidepressant (sometimes)" or it is false/meaningless. Neither neurologists nor psychologists have a sufficiently detailed understanding of the workings of the brain to make such a claim.
Again, I'm glad drugs work for you. I would note that there three ways drugs can go for people; working with few problems, not working, working but with significant physical and/or psychological side-effects. Especially, taking any substance daily for the rest of one's life can stress the organs responsible for digesting/processing regardless of whether than substance is otherwise a great fix.
So I think we need to look beyond a glib "this fixes it for everyone" rhetoric even if this fixes it for you (and yeah, some of my friends should at least drugs, I'll admit).