It's not a big thing, and obviously it's a matter of taste, but I find it improves readability slightly. It's most notable if I'm doing work based on literature

It's not a big thing, and obviously it's a matter of taste, but I find it improves readability slightly. It's most notable if I'm doing work based on literature with standard notations (e.g., α₀ instead of alpha_0), but it can also be really nice to help keep track of different states of the same value, e.g., loc₀ vs. locᵢ and locₖ inside loop(s) or with staggered indexing computations.