I like using acronyms cuz it gives me more time to focus on what I want to say, rather than have to write out "daughter-in-law" or "mother-in-law" and so on every time. It's not so time consuming to write out words like "son," of course. But if I'm going to say DD, then I feel I should also say DS and so forth.
I'm not trying to be like the young people - and acronyms, by themselves, aren't necessarily "textspeak." But I admit that sometimes the younger people have some good ideas. And, IMO, using acronyms in these conversations is one of them.
No one has to use them, of course. But it seems they're here to stay and if that means looking some of them up, now and then, so be it. After a while, I've found I can figure most of them out, myself, anyhow. I get the concern about the "flow of conversation." But, in time, that gets easier, so no big deal, in my book.
That being said, I don't mind this thread either, I think it's good that gransnetters feel they can voice their complaints, if any, even if it's about something so simple as acronyms. So I'm cool with this thread, 2old4hotpants, even though I don't agree with your concern.