I live in New Jersey - east coast of the USA. This rant may not apply to everyone.

My job is east of my house - the worst possible direction to bike commute.

In the early morning, the wind is still generally calm, so I gain no advantage. However, in the afternoon, the wind picks up and generally blows from the west - into my face as I ride home.

I lose with the sunlight too. I commute east into the glare of the rising sun and come home west, again into the sun glare. Daylight saving time makes it worse, the clocks get set back one hour in the fall so I get to repeat the whole sequence of riding to and from work through the sun glare.