>> it's so interactive that it almost never crashes

I learnt game programming and OpenGL from the ground up using CL. If it were not for CL, I probably would not have the patience to hang around.

I used LispWorks OpenGL bindings and with vertical sync integration, live updates to a running OpenGL program after modifying the code is/was super fun.

The biggest advantage I have found using CL is in learning hard topics as you at least have the language and the tooling get out of your way helping you focus on the problem at hand.