If by "sucks" you mean "slow", it's probably because of an inefficient algorithm. Knowing assembly won't make you realize you're doing O(n^2) where you can do O

If by "sucks" you mean "slow", it's probably because of an inefficient algorithm. Knowing assembly won't make you realize you're doing O(n^2) where you can do O(n). These days it's hard to justify learning assembly for someone who's not planning to write high performance low level code, and even there, your time might be better spent learning GPU programming or multithreading.