Because pants don't fit. Ever.
I've been doing better now that a few mainstream retailers offer a "curvy" fit which has a smaller waist and larger hips than the standard cuts. But still, last week I returned a pair of pants which were simultaneously too big and too small (waist and hips, respectively). They were also too long in the crotch and too short in the inseam. I don't think I am mutant-shaped, but pants really just never fit. Ever.
So yesterday, I impulsively registered for the following new class at my local sewing shop:
Basic Pattern Drafting - Pants
4 session class.
In this new class you will learn how to draft your own basic pants pattern. Using square and curved rulers along with your measurements you will draft a pattern on paper then construct in muslin to fit and adjust if necessary. You can then use this pattern to design other styles of your choice. Prerequisites: Absolute Beginners, Sewing 101 or other intermediate pattern class. Must know how to use classroom machine. Supply list will be given upon registration. Intermediate Level.
I'm not sure I am intermediate level (I think of myself as novice). And I think I ought to do some serious homework on waistbands, zippers and button holes before the class begins next month. But what the heck. This is the class I have been waiting for!