I think there’s a difference between being a shitty person and being unwilling to help and being repeatedly used because you’ve helped out a couple of times before and now people end up leveraging your kindness. I personally subscribe to the line of thinking in the comment you replied to after giving the person I’m working with the benefit of the doubt that it’s a justified emergency a couple of times. I have a list of people at work now that I’ll still assist but I don’t jump at the opportunity as quickly because everything is an emergency to them and I think that’s just as shitty as not helping someone.

Just to clarify, I phrase it a bit differently: Not “piss-poor planning” but rather “a lack of planning” since it sounds less aggressive.