I have a carbon bike and know that it can possibly explode as well so it's a chance I take, but overall I'm pretty confident that it takes specific circumstances to cause that kind of failure so you just have to make sure you check your carbon components for potential issues. I haven't been convinced to buy carbon stems, seatposts and bars more because of cost than anything else since the benefits don't justify the expense for me. On the flip side I've seen Thomson stems fail and while not as dramatic as carbon failures it's just as scary.