Also consider that maybe people do not want to party and the kind thing is not persistently inviting them, but rather actually find something to spend time with that person.

Not wanting to go out "to party" is not a moral failing, a problem, a fault, something which someone needs to overcome. If you like that person you can find something to do on a Friday night you both enjoy, if you don't then I doubt that you really care for that person at all.