Quoted from Circus_Animal:
Is the buyer picking up the item personally? If so, that is a huge red flag. Why use Paypal rather than cash on pickup? Paypal is dodgy as hell and will refund transactions at the drop of a hat, no questions asked, no evidence required. You should NEVER use Paypal to accept payments, unless you know and trust the person sending them.
Because some people deal in PayPal and sometimes already have the money there. Case in point, I had a guy buy some videogames off me last year (a large collection). It was worth a couple grand and he PayPal'd me. I went to go look at a $2,000 pinball machine that same night, but guess where all my money was? PayPal. So, I asked the guy if he'd take that, he said "sure", and the deal was done just like that with a couple of clicks on my phone. No cash traded hands, not physically in person anyway. Sometimes PayPal just works. But yes, we both knew and trusted each other, so that's something I do agree with. Although, you can get around that by using the gift/family/friends option if you are using it off of eBay--then the buyer can't retract their payment. If I was dealing with a stranger, I would require that form of payment if they were only willing to do PayPal.