Even if people will start making a plastic cards in different countries you will not have a chanse to pay with bitcoin cause it's illegal, better to leave bitcoin now and wait when it become legal everywhere.
There are countries that bitcoin is ban but most countries have embrace bitcoin and companies there are now investing and making a move for local user of bitcoin to used their bitcoin locally.
More Governments and companies are are adopting the bitcoins and it is readily available everywhere. Those countries opposing this bitcoins and trying to Ban it, will get nothing but haters from the people.