Obviously quitting on a quest that is too expensive. I got to level 100 and was wondering if it was worthwhile to purposefully lose so I could start doing these again.

It's a risk that they will create more levels...but I am not sure that it will ever happen.

I've never gotten to level 100 (that's really impressive, by the way), but I wouldn't hold your breath. There's no sign they'll add any extra levels, as far as I'm aware. I personally would restart, because at level 100 it probably won't be long before you're asked for an item that isn't even in the shops. Item Hunt is usually quite profitable between levels 20-70, give or take a few, so I wouldn't want to abandon it entirely for the sake of leaving it at level 100. But it's your choice.

Oh I forgot about this board! Anyone with other opinions about maybe if you make like 1 mil each time you try it and then quit around 50? Please ping me as I don't frequent this board.