>Second, you don't have to be a merchant to hate PayPal.
Exactly. I refuse to use it more due to ethical reasons[1] than anything else, but there are a metric shit-ton of reasons for not supporting and using Paypal.
We need more (viable) alternatives. Paypal is a bit like Windows - it gained a monopoly because it was successful early on due to the lack of viable competition, and now we are at a point where we need to get rid of that monopoly, but it's difficult to do so - but we must.
[1] See the Wikileaks blockade, amongst other things. It's by far not the first time they pulled that shit, the WL incident just was the worst example so far.
Second, you don't have to be a merchant to hate PayPal. Most of the time I will simply choose not to buy something rather than use PayPal. --The last time I couldn't avoid them was about 2 years ago.