I text a lot, even though it's only one person. But I was raised in the south, and I think manners are pretty important.
I mean, I'm a laid back guy. If I'm hanging out with friends at a fast food place or some Mexican restaurant, who cares who's texting who? When it's a family dinner (not that I have any of those) or a nice restaurant or something, you can keep your phone in your pocket for 30 Fuc-maybe I shouldn't curse, there seems to be a lot of younguns around. You get the idea though. Thankfully, I don't have any kids and no plans to make any. If I did, you can bet they'd have at least some basic manners.