@Gar****
availability of flights, increased cost of flights (some), risk of getting locked down in transfer nations, complications of return flights, cost of insurance, practicality/availability of health care in host nation in event of infection, positive test on arrival and quarantine, annoyance of quarantine, long hours on a plane fully masked as above, additional administrative load (COE or similar depending on nation), increased risk of exposure on flights and in airports, possibility of extended lockdown in your visit country. Stuff like that 🤷♂️
For context, I have been travelling full time for last 87 months. Am I leaving Thailand in next 12 months? Highly unlikely. I think people just need to adjust their sites on how we travel