I think brianboru sums it up nicely
I think, I may be wrong, smbsmbsmb doesn't understand what is being said.
If people can't be bothered, that's one point. Automating the thing that people can't be bothered with sounds silly.
I am not nagging, I don't want automation. If you don't want to say thank you, that is your choice but please don't expect the site to automatically do the job you should do out of courtesy.
It's just I was brought up to say thank you if someone did something for me, whether it was to open a door or post a torrent