I used to have a complete upper plate, and back bottom teeth anchored onto my own 6 bottom front teeth. But those remaining 6 teeth disintegrated in the end, and now they are all false, north and south. I'm fine with them, though i preferred it when my bottom teeth clipped onto my own teeth. I have a small-ish mouth, and the dental technician said it was a good shape for false teeth.
My husband has false ones north and south too, but has really awful trouble with them: he has a large mouth, rather difficult to fit. He manages by using dental fixative top and bottom.
We would both love implants if they could do them for a full mouth - not sure if they can. Anyway, we cannot afford it so it doesn't matter. It is probably simpler to have false teeth if you can get good ones that fit really well, as mine do. But some folks aren't lucky enough to have the sort of mouth that works well with them.
Decisions decisions decisions, eh?