Why do so many sellers take offense to offers on their listings?

I do not think many sellers  take offense to offers,  just a vocal few...

I've been shocked a bunch of times, at the low price an item I was watching, sold for (relative to asking price). Would have bought it if I knew how low price would go. I'm never offended by low offers, except the few that then argue why I should accept their low offer. Most of us here are not professional sellers.

my favorite tim_p was when selling a heavy pair of mid sized speakers,without boxes,  local sale only, "how much to ship to Paris?"...

I understand that oranda, though I think most realize this is no longer a "hobbyist" site,  but a very commercial site as well now...

there have also been long, at times contentious threads, about what actually constitutes a low ball offer...I certainly have been watching enough items, that some do sell at very low prices, so I guess some will make many low ball offers knowing 1 or 2 will be accepted...some here care less than others what price they get, they just want to get rid of stuff...though since we don't know each other, I never think of it as personal or offensive, just business as usual...

the primary purpose of this site is to buy and sell gear...though there is discussion of music, there are many other sites more focused on music and quality recordings...