How closely do you feel Star Trek relates to reality on a societal basis?
very far away
many current issues are addressed and solutions are presented,
it depends on the star trek series. ;-)
not so big...
i would also evaluate the different series differently here. tos is somewhat like "the 60s of the future," tng is too lofty, ds9 is sometimes almost too dark, voy is indefinable... and ent is simply adapted a bit to our reality again (just look at the 3rd season), but it unmistakably carries the "spirit of star trek."