All of my wheel sets are tubeless ready so I don't have a reason not to go tubeless other than being old and set in my ways, so I still run tubed. Plenty of people have gone tubeless and haven't looked back, so it's not some mystery of biking that people are learning about for the first time. Given your experience, I understand being hesitant, but how many times are you going to encounter a similar situation to your MTB incident? I can't imagine many. I think the question is do you want to deal with cleaning sealant off your wheels every time you change tires and if you feel confident that the sealant is going to work if you have an issue given the roads you ride.