Most ideas people have suck. That's sort of the problem of new ideas in particular. When you're working, their failures aren't recognized as some kind of thing you need to tell the world about, you just tried something speculative and it didn't work out. Writing papers sucks (though it can be ego satisfying if you did something really cool), and writing papers about negative results that no one will publish sucks even more (or give you money for). Also, if you do something really dumb, now everyone will know about it.