A man posted on one of the internet forums recently that he buys an inexpensive suit and wears it just three or four times, six or seven tops, before giving it away and buying a new one. He asks whether keeping a suit for years doesn't run counter to the notion of style, to which I say that he's got his sexual roles reversed.
That's because fashion is for women and style is for men. The fashionable woman buys clothes frequently and wears them just a few times so she can dress in the mode of the day. The role of the male of the species, on the other hand, has been for the last three hundred years to provide a good looking backdrop to that extravagance. A man ideally wears well cut clothing that remains perfectly appropriate for decades.
Men's clothing is not about replacing peak lapels with notch because notch appeared on a runway this season. Indeed, the best dressed men have wardrobes that encompass most of the mainstream style options, and wear them on appropriate occasions. Peak lapels are more formal than notch, and more suitable for an opening, for example, just as patch pockets are less formal than besom and better for walking the dog than sitting at the head table of a banquet.
Better clothing worn longer also has a favorable cost per wear. At the extreme end of the equation, a bespoke suit cut from good cloth will easily last a hundred wearings and defeat its glued $300 stepchild that's disposable after half a dozen.
Leave fashion to the ladies and stick with style.