Rajan, it has nothing to do with "act" and "state".Originally Posted by rajan
Infinitives, like "to swim", express an unactualized event. The event hasn't yet happened or the speaker hasn't yet experienced the event. The event is unknown. On the other hand, "-ing" express an actualized event. The event happened or the speaker experienced the event. S/he he knowledge of the event.
EX: We went swimming.
(the event "swimming" happened)
EX: We want to swim.
(the event "swim" hasn't happened yet)
EX: We want to go swimming.
(the event "go swimming" hasn't happened yet. Note, "swimming" is the object of the verb "go". That's why it takes -ing in that context.)
EX: I dont want to drink.
(the event "drink" did not happen)
EX: I don't want to drink anymore.
(the event "drink (more)" does not happen)
All the best.