I really dont worry about any of it. If someone texts me" k" I take that as they are not interested or dont wish to talk about what was being said. Maybe its just the topic at hand and you just need to talk about something else...or just leave it at that. Annoyed by it?..no. If someone gives me a "lol" then either they might actually find the previous statment funny or they dont know what to say. People give fake laughs in real life all the time to comments that are of little meaning or weird. Doesnt always imply they are trying to end the convo...things of this nature are just to minute to waste time letting them really bother you. I try an not make something out of nothing if at all possible. I mean there are bigger things in life to get upset about than things of this nature. The fact that something like texting k or lol annoys people is actually funny in itself. I mean their are bigger things to worry or get upset about in life than this..like for instance...the rapture is about to happen in a couple of days people!!!.....
