You pvp for one of two reasons:
1) You want to fight people.
2) You want to kill people.
There are certain unwritten rules if you want to do #1, regardless of what certain people (some of who I *know* have zero interest in pvp) said in this thread. Certain tactics and abilities are inherently cheap and/or simply not fun to take the time to counter.
Now, I am not saying wanting to do #2 is wrong...in fact, if that's your thing, chances are you want to **** other people off anyway - so enjoy raging out people there for #1. But understand there is a difference between fighting & killing.
And some people will cry no matter what you do. /shrug