Not convinced KK all-in preflop up to 100BB is good idea (at $0.50NL)

[Paxinor]

when do you ever face overbets?? facing pot odds 7:6???

having KK and beeing pushed directly after a threebet is SO unlikely in low stakes..

OPs point was to fold KK as a default

you are making up some rare situations where it might be correct.

the "never fold KK" is a simplification of a general rule. a low stakes player WILL NOT be able to seperate the spots where to fold KK from the ones where he shouldn't as proved by OP. if you are good enough to separate them you will be on NL100 and up so it won't really matter anymore

thats why the statement exists and it should be applied by any not so good player because they do the math wrong and fold KK after they 4bet for example