That's a reasonable question to ask. I think in general, there are lots of reasons to like a language outside of its runtime performance. I love working with

That's a reasonable question to ask. I think in general, there are lots of reasons to like a language outside of its runtime performance. I love working with Go and Rust due to their performance. Any I work every day in C#, which ends up nice and quick, too. But I still love Ruby due to its expressiveness, and the way it works just seems to align with the way I think. But that's poetically because I used Smalltalk in the past and I like the bits of it that Ruby borrowed. :) To answer to original question, though. I'd say it's irrational to hate languages that are slower than necessary because it's irrational to hate a programming language at all. No matter what language it is, it's just a bunch of words on a screen. Use the ones you like and don't waste any brain cycles thinking about the ones you don't. Unless you're locked in a cube farm and forced to write Cobol at gunpoint all day. Hate might be rational then.