If you fly for a living you will sometimes do so in conditions you would not voluntarily accept. Turbulence, ice, crosswinds, short runways etc are not the norm but hopefully your experience level will allow you to cope.
For example crossing the South China Sea in an airplane that can only make about 13,000 feet and you penetrate a line of the ITCZ that shakes you up so bad you say "never again" only to find another line past that one. You figure it will not be worse than the one you just came through, but it is. And another line past that.
Better that you know how to do it than deny the possibility. Sometimes you do not have a choice, apart from several options that are all bad.
"Never fly in a CB" is a statement made by someone who has not been there yet, but eventually will.