NATO doesn't actually cost that much, so trump's basically a stooge.
But it is a complete anachronism, and the expansion has been a major, major blunder. Especially the expansion to the Baltics, which makes it much more likely that we will get sucked into a conflict that has nothing at all to do with our national interest. And that, more than anything else, poisoned our relations with Moscow. For nothing. It's not like we're safer now that we are treaty allies with Albania, for chrissakes.
I'd rather have no NATO than the current NATO.
Clinton expanded it first, and Bush followed. Expansion halted under Obama...but I bet it continues under either Clinton 2 or anyone from the GOP. And that would be a disaster.