Sure. But I think it is better to set realistic expectations. After all, it you don't expect much, then you won't feel so bad when it doesn't manifest. With false hope, you are crushed each time your hopes don't meet reality. In the long run, realistic expectations serve us better because we can see how our efforts lead us to the results we desire.

This isn't to say that conventionally unattractive people should give up all hope and dispair. It just means they should temper their expectations relative to their more attractive counterparts, and should focus on things which are within their circle of control, like fitness, grooming, style, lifestyle, mindset, and number of people talked to.