A lot of Discworld books portray Terry's view of suicide.

[Cool Middle Name]

Whether it's Witches Abroad or Carpe Jugulum, or both even, I'm sure I've read parts about people feeling caged in their bodies, who death would be good for, and that witches could 'lead the way'.

And that quote from ISWM that Susan Hicks wrote, 'The hare jumps into the fire', seems quite relevant also.
You could perhaps count Reaper Man, but that is more so about the value of life than the end of it.

So for how long has Terry Pratchett thought about death and supported assisted Suicide?

[deldaisy]

I think it was the Sydney interview (someone correct me if I'm wrong) where Terry has discussed that he came into contact with death on his first day as a very young reporter (journalist) and has ever since.

He didn't know about his disease until fairly recently (well recently if you run a time line with the Discworld series) so I don't think he has been trying to weave it into his stories subliminally.

As a writer he has always talked about death.... as a person he is just doing the same.

[unseenu]

I know the scene in carpe jugulum you mean,there is a man that is too hurt for Granny to help so she reaches into his mind and lets him go

[Tonyblack]

Terry writes about humanity. Everyone dies, it's one of the things we have in common. I guess him writing about it is inevitable.

[Cool Middle Name]

I guess so.
It was so strange though how relevant the topics were to each other. Almost like it was on his mind.
Also, I've seen lots of things from Reaper Man mentioned in Lords and Ladies that I haven't seen in other books Ridcully's hat. That dwarf with gimlet eyes who runs the delicatessen on Cable street.
Perhaps more references to each other but I can't remember.

[LilMaibe]

I think that is what defines a good writer:
The ability to create a living world (That is the main reason I dislike UA, every concept newly introduced in it is just dead).
I think Mr Pratchett once said it himself that he couldn't let AM burn down like it happened at the beginning of CoM as nowadays one would be aware of who's in danger inside the city walls. left alone who's likely dieing.
IMHO a good writer manages to make the world feel alive. This also includes the ability to handle all kinds of topics in various ways.

There are several authors out there that appear to be able to only paint in black and white. The good guys do good things, even if they are wrong and no matter what the bad guys do, it has to be evil in the long run.
In a 'dead' world themes like (assisted) suicide would likely be, if ever brought up, either be something only the bad guys do (to go with the general moral of the audience) or will get a very, very kitshy touch if the heroes do it (which then most often goes with, they do that so the guy who was forced by the bad guy to do evil things can go to heaven/whatever)