Why is trazodone rarely used for depression?

Why is trazodone rarely utilized as an early-on monotherapy option for depression? You would think it's a solid option with it's low incidence of weight gain and sexual side effects, combined with it's benefits on sleep. Maybe you run into tolerability issues when you dose it above the lower doses used for sleep? I'd be unaware personally, because I self-admittedly rarely use it like this as well.
Source: Student Doctor Network - Category: Universities & Medical Training Authors: Tags: Psychiatry Source Type: forums