A casino that has a minimum deposit of 1 dollar and a minimum withdrawal of 5 dollars is what would always be ideal for me, I know that casinos like this don't exist, they always require a higher amount in account or when withdrawing, but a casino that offers this This type of withdrawal would be the best, but for players who are on a low budget but like to play and enjoy, players who have a lot of money it is quite common that this type of thing does not affect them, because they handle very large amounts, and the The casino has no problem processing withdrawals automatically, but I also know that there are many who would take advantage of making micro withdrawals and that would not be good either.
The reason why only few casino nowadays offer this kind of low withdrawal amount is because they often give promotion that gives user micro rewards. This high withdrawal amount will limit those users that only benefiting on the casino giveaways to not easily cash it out to there wallets.
Some casino offer free withdrawal so I doubt that this high withdrawal is mainly due to the high transaction fee.