Anyone under the age of 40 grew up never seeing Star Wars on the Big Screen. Aside from that brief 3 month window in 1997. Anyone under the age of 25 has never seen them on the big screen.
Not in a wide-rerelease anyway. Yeah there are niche specialty showings you can go to, but almost no one grows up seeing them in theatrical format.
Unless you're talking about the prequels and sequels, but those don't count.