Men have it easy. Go through your collection of photographs from weddings and see which pictures are the most flattering. You’re probably wearing the same mens suit in all of them. Now check the photographs of your wife or mother and see the wide range of clothing styles, including garments you probably couldn't name. What's more, the women in these photos probably had to shop quite frequently to look that good at weddings. As a man, you need only buy yourself a few truly great suits in a lifetime to look as good as you do in those photographs. So the downside of wearing men's suits for a wedding might be that men all look the same, but at least we save a lot of hassle by sticking to the one outfit.
Recently, some men have sought to change the fashion paradigm of mens suits for a wedding. It might be better, they think, if we began to wear something with more variety. This is unwise. The lines that a suit creates flatter any body type and make us look like we're in great shape. What's more, the simple colors make sure we'll attract less attention to our looks than our dates. This is perfect, since the extra attention that comes with having your fashion sense scrutinized can be hard to bear.
The best part of all is that mens suits for a wedding can be re-purposed later. Imagine your wife or mother wearing the same thing to a wedding that she wore to a funeral last week. She would look so dour and morbid, everyone would be uncomfortable. Mens suits for a wedding, on the other hand, look great at any occasion.