Much better to have your scent blowing towards where the deer are moving to feed, rather than blowing towards where they are coming from in the evening.
In the morning it is totally opposite. Better to have the wind blowing towards the bedding area than from the fields they are leaving.
If the wind isn't in your favor and you don't have multiple stand locations where one is right, you would be better off staying home, doing something else, than to educate them to your presence by hunting when the conditions aren't in your favor.