I think I do. Sometimes, with some people. Most of the time I find holding grudges a waste of time and energy, so it's basically pointless.
It's not like I spend my every waking hour harbouring the negativity and plotting some evil schemes to cause those people harm. It's not something that's always on my mind but with some people I just can't help but feel reluctant to communicate with after some things have gone wrong.
I can forgive and let go of so many things but sometimes the damage is done and the negative feeling and some subconscious resentment just lingers for a very long time until it's replaced by indifference.
Nope. There are a couple of cases though, where not out of hate, but out of self-preservation I logically choose to not deal with that person because they are blacklisted. But it's not a grudge because they are not in my life anymore, neither of us like each other and we ended our friendship.
Even those people...I don't hate in any way. I might say that I do if somewhere to ask...but I don't really.