For me I am a naturally cautious person and tend to think of worst case scenarios on a daily basis. I am a catastrophiser.
Therefore I'm very reluctant to book things far in advance. I wouldn't book a holiday years in advance. Maybe months but more likely weeks.
This pandemic has reinforced that. I can't see myself booking a holiday for 2022/2023. I want to go away in January but probably won't book anything until December.
Seeing the hassle people have had to go through to get money back/travel insurance etc puts me off booking anything earlier.
What about you?