I hate helping my wife take selfies.
What's wrong with helping to take your wife's selfies?
They don't look professional at all. They always come out blurry or don't show our faces or are half dark.
I understand that you maybe don't take great photos, but if your wife asks you to help her take a selfie it's rude not to assist her. With some practice you will be taking great selfies in no time.
I prefer to take professional looking photos.
You should still help her if she asks. Have you considered getting a selfie stick with a remote? That might help you take great pictures.