Random Newbie: "SBCL's memory usage is completely terrible and makes it unusable. The libraries are half-assed and suck." Amateur Lisp Dipshit: "NO IT ISN'T, IT'S BECAUSE LISP IS GOOD." Random Newbie: "FUCK YOU I'M GOING BACK TO JAVA/RUBY/PYTHON."
If you repeat this for decades, you'll have the current state of Lisp. I hope this explains everything.