Had our first major tire issue

I feel we need the LT tires because of the speed factor. Most nearly any trip we take requires us (from where we live) to spend some time on one of the interstates in Texas (I-35, I-20 & I-30 are heavily traveled with truckers who will RUN OVER you if you are not going the posted speed limit). I personally liked it in TX when truckers had to go 5mph less than other vehicles and stay in the right lane but some time back, that changed and all the posted speed limits all went up as well. Anyway, we are definitely not speed demons but do find it is hard to maintain 65mph or below which those ST tires rated for. Therefore, a safety factor for us (I feel) is LT tires. Some will argue that going over 65mph towing is not safe but I fully trust and believe in DH judgment as he has been towing heavy trailers for 30+ years. A few years ago, he switched from trailer tires to commercial tires on both of his gooseneck trailers. According to him, that was one of the best moves he ever made and has saved him a bunch of money in tires ever since. From all the reading and researching I have done on this forum, the internet & speaking with tire professionals, I believe LT tires will be our best move on the FW. I really appreciate all the replies I have received on my original post. Everyone has had valid points and opinions.