more prevalent because you will much more often be in situations where both players have the nut low but one player has a strong draw for high, or an already made high hand
in pot limit games yeah you might certainly consider folding if, say the pot's not very big, you have just bare nut low without options to scoop, and your opponent's range is very strong.
What Kisada said. A substantial proportion of your profit will come from players who cannot fold a bare nut high or low, god bless them. Having something like KKQ88 no low on a 348 flop should be an autofold every time, but it's incredible how many people will get all in then bemoan their luck when A2 rivers a wheel or flush.
