You've been lucky. My experience in recent years is that the security check can be fast and can be very slow. So I have to allow a long time for it because I don't want to miss my flight. It's just one of the airport processes I have to undergo and over which I don't have control. All of this adds to my jaundiced view of flying nowadays.
Forgetting any security at checkin - what about immigration checks on arrival? Sometimes very quick, but certainly (2023?) I have had to queue at both Catania and Dresden having flown in with a low cost airline. And - though on a cruise - the USA immigration at New Orleans managed to cut two full days in the city on our cruise down to an evening and a day as it took them six hours to process everyone coming off the ship. At least we were called off in stages, but it was still painful - literally - for those who are not "disabled" but cannot stand for hours.
Long overseas day trips are NOT for me
personally any more. Part is environmental. Part is that I prefer to have the freedom to get up and walk around rather then being packed in (and, yes, a prefer a train with 40% seats taken than 90%). Part is the time and procedures at the airports. Part is the home to airport and back journeys, and the delicacy of public transport connections to the final service of the day. And part is wanting to spend longer there.
Lisa and I are planning a trip. But not day - fortnight. And not flying - trains and ferries.