>>3
Thing is, I won't insist you have to use it. You started this thread. You asked. If you don't actually care, I don't care either.
Lisp is a better tool for certain jobs. Hard jobs. Stuff outside most people's comfort zone. If all you're writing is glue code to make one API talk to another API, and you don't need it to run on any particular CPU, and nobody will care if you burn a million cycles per arithmetic operation, you can write whatever in Python and that's fine. In fact, you can get paid loads of money for it and it's none of my damn business.
For some other things, having a more intimate knowledge of Lisp will make your life easier and free you to concentrate on the problem at hand, but only if you've already invested the time and energy to develop those skills. If you run into such a problem, it probably won't be worth it to take a detour into building your Lisp muscles first. That's just yak shaving. Go deal with the actual problem.
I don't have anything profound to say. You can develop your Lisp skills by goofing off and doing shit that doesn't matter, with a small chance it might pay off someday as a productivity multiplier. If you can't afford to goof off and try learning random stuff, then I guess you just can't. Is that sad, or is it just reality? I don't really care. It's not my call to make. Perhaps you will learn to be at peace with yourself.