Listen, Monads are fine, Functors are fine, use them wherever and whenever you like. The problem I have with them is that they are making things explicit that a

Listen, Monads are fine, Functors are fine, use them wherever and whenever you like. The problem I have with them is that they are making things explicit that are intuitively clear (Monads more than Functors). That is useful in some situations, but in most situations it is not, and just uses up precious brain capacity. If you go to the shop, you are not expecting someone at the entrance telling you that you have to pay for what you buy, and before paying, you are not telling the cashier that you are going to pay them now. You just do it.