It's hard to say how you'll respond in a more permanent situation where you don't expect to have normalcy return in a few days. You also have to deal with what happens if you initially think normalcy will return, but after a few days you realize that this isn't the case, and have to change your strategy accordingly. The people you have taken in or are helping will not be happy when you try to turn them out because they contribute nothing to the group's survival. I am pretty well known to be maniacal about lending things out. If I don't get something back, I will come looking for it. If your neighbors think the stuff you lent them is consumable, it could be an honest mistake, but it sounds like they are mostly clueless.
I am in a similar situation to many of you. Although I don't talk about whatever preps I may have in place, my joking about zombies has many acquaintances(mostly from work) joking about coming to my house if it all comes apart. They live in this fantasy land where I have a hardened bunker in my basement and am armed to the teeth. Other than assuring them none of this is true, I do mention that if they believe it, then it would be a critical strategic error on their part to come over. Funny thing is, a lot of my co-workers, and these are finance people, do have generators, some food stores, and in some cases guns(though this is not talked about much due to the workplace), but they are not preppers per se. A couple even have bug out bags in case of regular emergency.
That said, it is hard to know how to handle neighbor situations. I am reasonably friendly with most of my neighbors, and help them out most of the time when they ask, or offer if they look like they need help. Pretty much same as Rancho, I help because I can. However I only have one neighbor with whom I regularly exchange tools, real help with things like snow shoveling, etc. I could probably depend on him.