Furthermore, it could be argued that our time could be spent more productively than on a language like Hare.
As for whether our lives could be used better, well, let's leave that to each individual. I heartily encourage you to live your life as I do, worrying about what I myself am spending time on (currently: this inane conversation), rather than whether other people might be spending their own time in some supposedly-slightly-suboptimal manner.
It is literally everywhere. Your kernel, your networking stack, your interpreters, your office suite.
Almost everything you use has some roots in C, a memory unsafe language that "messed up" and still became the most widely used language ever.
Software will always mess up, regardless of language it's written in.
Then ... don't use it. Others can use it and see what they learn from it, or even whether they find it productive to build stuff with. Even Brainfuck and Malbolge have devoted users who enjoy the challenges they pose, so I can promise you there's room enough in the world for this language. Let's just have some camomile tea and calm down a little.