Well, they probably did deserve it, but that doesn't mean you should. If someone is driving as such, pulling to the side a bit and the giving them a wave to pass you would have probably been much more effective. But, 'tis your choice. It's just impossible to truly know how what you're doing on the road will effect others. Everything is so anonymous. It is a bit like the internet. Just as many trolls, too. :o
Shutup and go sing to a rainbow or whatever you do in your spare time, real men are talking.
There is nothing so strong as gentleness, my dear, and nothing so gentle as true strength.
<3