Travel by myself or having to share trips with people I can't tolerate, on top of the all the issues mentioned above.
When my husband was alive, we used to travel extensively with no real worry whatsover, even when we had a few mishaps. Being together, we got the feeling of being secure, subconciously we morally supported each other and didn't have that feeling of anxiety which comes along with age; we just made sure taking turn to keep an eye on potential danger.
But after his death 5 years ago, my confidence vanished completely; being alone, I couldn't find the courage to travel by myself, besides the fact that there's no joy in solo travelling.
I'm actually trying to get to know this group with the same interest of travel, and with some luck, will find friends willing to share my future trips, as my SIN miles are about to expire.