if you are going to have a priciple
then stick by it. dont use the fivers. its your principle (could be religious, vegan, etc, whatever) and it may inconvenience you. thats half of the point isnt it? its your problem, deal with it, dont whine about it.
ive never met a vegan (ive not met many but one of my close friends is one) who has stopped driving due to all the innocent flies they kill whilst driving around. its too inconvenient she (and the other few i have asked whn i come across them) says. it only seems to be a principle when its convenient.