Can things go bad? Sure! Agreed it's all in the risk one is willing to take. While we are in the planning stages of our trip, and have found great airfare, we haven't jumped in the pool quite yet, waiting to see how the first few weeks of open borders go. But, if all goes well, we are in. I agree with the posting above that you never know what strain comes next, and what will be for years to come. We can certainly understand your hesitancy, but again, as many above have stated, it's all in what you are comfortable with.
Recently in Texas, an outdoor wedding in an open-air tent took place. Six vaccinated guests came down with the Delta variant of Covid. Two had Moderna vaccines, two Pfizer, and two the Indian made Covaxin. All six had the classic symptoms of COVID, fatigue, cough, body aches, and fever. The ones with the Moderna and Covaxin lost their sense of taste and smell. It was thought that the Delta variant was introduced at the wedding by two guests who had traveled from India and tested negative before their flight but developed symptoms in the US. They were the ones with the Covaxin vaccine. One became severely ill and was hospitalized, the other died. Guests with the Moderna and Pfizer were not severely ill, just mild symptoms. The reason for bringing this up is, there are no guarantees. You don't have any idea whose path you may come across on your travels, who were diligent with their testing before traveling, and what may happen. We all just have to make the best decisions for ourselves, protect ourselves in crowded areas, and use that sanitizer and masks when necessary. We all know the drill by now. COVID is still out there, and circumstances can change in a minute for any country that has recently opened up. I am glad the U.S. is still requiring negative tests for vaccinated travelers. We need to all do our part in squashing this nightmare once and for all. That being said, we wish everyone who has booked a trip or is currently traveling, safe travels, and can't wait to read more trip reports!