I deal on the side in vintage & antique furniture I buy from estate sales. Probably 80% of my transitions are straight cash or checks for some of the larger items. I had square for my phone, but then I got the paypal reader for credit card transactions. When I ask customers what they'd prefer if paying by Debit/credit card they'll choose Paypal 70% of the time because they know all about it. Although that is changing as many coffeeshops in the area have started using Square.
Frankly it's a little better for me as well. I have a Paypal debit card. They can pay me and I can go 15 minutes later and get cash out or buy something with that debit card. With square I have to wait a day or two.
As much as I may dislike certain parts of Paypal, I've yet to find a total replacement for it.