That's right, one chic black purse that's reversible to a lighter color pattern (not solid) with adjustable strap, from cross body to simple chain, that folds inside to convert the bag to a clutch. (Really need are keywords here.)
Most of the website headline results searching the question show 5 to 10 purses. Cross body, clutch, and tote I believe to be the three most important as they cover every day, special occasions, and out and about time ( picnics, flea markets, beach, over night, etc.)
If space is an issue or you lean toward a minimalist life style, then buy a remnant of upholstery and/or drapery fabric. Sew three purses: special occasions, every day, and a tote picnic size.
I prefer a handbag wardrobe to go with the seasons, use, and ego. I mainly buy at thrift, rummage and yard sales. Favorite purses are used until they are unusable. How well seams and straps are holding up determine whether to retire (toss) a handbag. If a strap breaks and the bag is still good, then I sew on another strap. I have about a half dozen I regularly use over the year.
My Handbag Wardrobe Guidelines:
1. Black, brown, and a color or two in leather, plastic and/or cloth, multiple pockets, medium size with adjustable strap.
2. Summer straw, crochet cotton and/or other light material in several sizes for phone; phone, glasses; phone, glasses, book; phone, glasses, book, camera; phone, glasses, book, camera, other stuff.
3. Evening and special occasion purse. One gold, one silver, and one pattern. Also, sew your own to match an outfit
4. Whatever captures your attention at a thrift store, rummage sale or garage sale
5. Picnic, beach, outing tote size with and without zippers
6. Backpack for strolling, hiking and camping
Fabric purses can be altered and embellished. Leather in some cases can be stained or painted. Always do a test on inside leather first.