Prehaps I am an exception, but I have had the same pair of Fiskars from when they first came out, I think that was over thirty years ago and the last time I used them about ten years ago they were still sharp. When I began quilting, I dug out my little Fiskars embroidery scissors from well over 25 years ago and they are still amazingly sharp. Our Extension Agent borrowed them a couple of weeks ago and was surprised at how sharp they were.
I once stopped dating a guy because he was going to use my sewing scissors on paper. Fiskars are the only scissors I ever use or have used for the past 30 or so years. I have never had to have a pair sharpened. I bought my first pair when I was making all my own clothes and of course they did cut through patterns, but I still have that first pair. When I bought them they were rather pricey for my budget, but in retrospect they were well worth the price.