Although skinny jeans aren't the most popular trend at the moment, trends come and go and you don't want to buy new pants every time a new style of jeans becomes all the rage. If you have looser and flowy jeans that you no longer want in that style, they can be easily altered to a thinner leg or even a skinny jean style with the use of a sewing machine and a few stitches.
You can make it more of a boot cut fit or skinny jeans if you have a flared pant leg. It's a great way to save some money and not throw away a perfectly good pair of jeans.