Never flown on a plane. I think I may be the last 51yo who hasn’t flown.
Never been on a cruise either - same reason.
You want to fly at least once, imo. After a while it gets to be hum drum but the first few times are fun. However, the tight security checks at airports have taken a lot of fun out of flying commercially.
There are cruises and then there are cruises. I've been on two, one I hated the other one I enjoyed.