I don't HATE when people keep names secret, but I do eyeroll a little. Then I get over it.
I hate! I make a little voodoo doll of the person and prick it with needles every night before bed.
Neither of my sisters found out what they were having with any of their pregnancies and they didn't announce any of the names prior to the babies being born. Now, they won't even share what names they considered for the opposite gender or other names that they considered, because they might want to use them in the future. I get irrationally stabby over this. Just share the damn names! But I love talking about names, so that's probably why I don't get it.