This is frankly a stupid analogy. To use your analogy, so because your bike can't ride over a mountain, the one time you decided to ride over a mountain in 23 years, you conclude your trusty bike of 23 years is not good?
If my bash script is more than 10 lines, I switch to python and if that's more than 10 lines I switch to C! And if that's more than 10 lines I use assembly!