Because it's still better than the alternatives. I recently ordered a small item from a specialist retailer. Payment by Paypal was easy enough (ethically questionable, yes, but faffing about with credit cards on the internet in 2025 is just a complete PITA not to mention insecure). But the delivery was a nightmare. It took weeks, to the point that I needed to change the delivery address. But customer service turned out to be an AI bot which ignored everything I wrote while confidently reassuring me that it had understood and was acting on it. In the end I had to cancel the whole purchase. A terrible experience, alas worse than anything I've ever had from the evil monopolist of Seattle.