Is it absolutely necessary to be nice to everyone you meet?

Now the title may seem a bit rhetorical however, just hear me out before making any assumptions on what my thoughts are on this particular topic. So, we all know kindness is next to cleanliness; I think that's the statement please don't @ me lol, and we all know that it is nice to be kind to one another and it's something that certainly makes interacting with those around us easier, but what if sometimes you just don't feel like saying hi or hello, good morning or good afternoon to random strangers? In that case is it such a bad thing to just get straight to the point of your interactions with them? What if you're not a small talk type of person and so you do your best to keep those happenings to a minimum, then what?

Help me out here guys and leave comments below sharing your thoughts on this particular topic. Personally, I don't think anyone should feel obligated to do anything they don't like or feel comfortable with, however if it's the bare minimum then I suppose it's not that bad, in which case maybe I'm just being a brat lol.

However, before I go let me just leave you with this one thought; not all but quite a few victims of true crime stories are usually described as the life of the party, the kindest, nicest, sweetest, bravest people that ever existed etc. etc. I don't know but uh I think that that is at least one reason to be a little mean when dealing with random strangers since just in case that particular stranger happens to be a psychopath who knows your bad attitude might repel them from harming you. 

Trial and Error.