The very act of writing is HANDs on because you either write with your hand or type with your fingers, and the act of it commits it to memory.
INFPs tend to be quick readers, the more they do it, the faster they get, so its not like it takes up a huge amount of time. For INFPs, reading is fun, never a chore. If they dont like reading something they will stop or skim but its not difficult for INFPs. Its kind of like breathing.
INFPs find that other things can be difficult, but reading, never. Also its not just words we read, it can be pictures or symbols.
I guess it comes from the P -Perceiving part of INFP.
I standing for Introverted meaning one reading a situation, they will then. use their intuition to make conclusions, other people are not required, but for ENFP they seem to need others around them or to comfirm they are right or doing something people approve of.
Generally Introverts are totally ok being single as well and are happy getting on with things by themselves.