Voted no also. Free advertising - I won't let car dealer put dealership sticker on a car I'm buying for the same reason. Someone wants to make tees available cheap that has their advertising, would consider it, but not for full price.
I do sometimes. I have lots of free t-shirts from events, races and hobby shops that i've been to as well as some that i have paid for. I see no difference in wearing a favorite sports team logo shirt/clothing or any other branded clothing including RC.