to not buy it when you legally can simply means you do not want btc to be mainstream.
I want it to go mainstream and I want to buy it, but why should I use paypal to do it when there are easier, faster, cheaper ways?
I don't have a paypal account. I don't have a USD bank account. I don't live in the US. I know that PayPal's fees are ridiculous when it comes to foreign currency transfers and such.
I don't trust PayPal, I don't want my name to go to some tax agency with a label "owns bitcoins".
I value my privacy, therefore I will not be buying through paypal, which doesn't mean I will not be buying at all.