I have $5 but on principle I don't want to give it to Google so that I can make their web browser better.
That with the horror stories about the review process has stopped me from publishing an extension for Chrome.
Edit: there was a nice article on HN last week about how relationships change once you start to have a monetary exchange, which I think suggests I wouldn't be the only one to be irrational about it [1].
For me the friction always comes when I try to use the internet without it