I should clarify Sturgis, I wasn't clear (which, if I had click reply all would mean that everyone wouldn't have gotten my drift)
I was talking about business email specifically.
What prompted this thread was annoyance at not looking to see who the email came from, who it was sent to, and using common sense in your type of reply.
I got, in this case, and email from Set, asking "What's going on with the Binkerman Deal?"
Knowing that dj was the person in charge of keeping old man Binkerman happy, I clicked reply to Set, and cc'd dj.
I said "Set, I think Binkerman is ready to make a decision, but dj's taking care of that. deej, could you please clarify and tell us the status?"
dj clicks "reply", not "reply all" and tell only me that Binkerman's attache came by last night to pick up the paperwork, and should be bringing in back in the morning.
So, I have to then either forward to set, or in this case, I clicked reply, cc'd Set again and said "That's fine dj, I'm including Set in this, since he was the one asking. When this is finalized tomorrow, could you please not be a moron, and reply to both of us, so I don't have to be your babysitter?"
On the other extreme, Drew Dad will send a group email to me, Set, dj, sturgis and 55 other people simply asking "Was task xyz accomplish by your team?"
Instead of clicking reply and saying yes, no, or ask a question, ass clowns will click "Reply All" and proudly say "no, not yet." Even better when someone clicks reply all and says "yes, but as long as you're emailing me drew dad, I'd like to ask you a few questions about something totally unrelated." Best is click reply all and saying "I think I got this email in error, since I've never worked with you drew dad" then someone else will click "reply all" and say "I got your email drewdad, but I'm not on this project anymore, so I'm going to forward it to Larry, Moe and Curly to they can work on it."
Reply vs Reply All....they're different for a reason.