A warm welcome to AFF
@Travellin Wilbury . I do agree with the packing cubes. amazing what you can fit in a carry on with the help of the cubes.
and the travelling Willburys are one of my favourite groups and perform my personal motivational piece - I Won't Back down.
As to HCO we are late converts. We have had a few instances of our checked luggage travelling via connections when we travelled direct. Has been over a week on a couple of occasions which caused problems. yes we would travel with a change of clothes in our carry on but no fun having 2 outfits for 10 days. No such worries with carry on only.
I am 78 with mobility problems. Dragging a 20KG bag around plus a carry on is a real pain in the back. We went 6 weeks in Bangkok over Christmas and in May 4 weeks in Singapore, Batam and Bangkok. Both times HCO. And we did have lunch in a Michelin starred restaurant in Singapore In 2 weeks time we are off on a 3 week trip Sydney, Bangkok, Hong Kong and Darwin again HLO.
We enjoy being able to check in on line, skip the check in queues and at the other end stop at Immigration then straight out of the airport.
Now in the next 18 months we have 4 cruises booked and for those we will take a 20KG checked bag.