Ooh, tough one.
Favorite right now is probably TypeScript. I like JavaScript. Like PHP, it's a decent language if you stick to "The Good Parts" and ditch a lot of bad ideas that stick around for backwards compatibility. TypeScript adds static typing and decent OO so it feels more like a real programming language to me. I cut my teeth on C and C++ so I love having type annotations checked, and TypeScript has caught silly errors in my code.
I'm learning Python. I think the ecosystem is great but the language is kind of meh. The idea of a "lambda" keyword to designate an anonymous function is a bizarre decision. But that's not enough for me to hate it.
"Hate" is reserved for PickBASIC, a variant of BASIC found on Pick OS/database systems. Pick was originally written for the IBM 360 series mainframes when they came out, but it's still in use today. It pre-dates SQL, so its ENGLISH query syntax was cutting edge at the time. It's an OS, where database tables are treated as directory and records are just text files with Attribute Marks, Value Marks, Sub-Value Marks, and other control characters. Two records in the same table can have a completely different schema, and with value, sub-value, and sub-sub value marks (available in a certain clone of Pick) a record can actually be three dimensions of data -- a customer record, along with every order they ever placed, and every line item of every order. If you wanted to do more than a SELECT query, you needed to write code in the built-in PickBASIC language, which was the BASIC we all know & love with some database functionality bolted on.
There's no "ecosystem" around Pick to speak of. There's no libraries you can pull in. There's no easy way to interface a version control system to it. Fortunately, by the time I was working with it in the early 2000s, the language had the sockets library from C exposed as functions so I was able to write my own version of CURL to connect our Pick server to the modern world outside.
So, a great language & system in its day that way outstayed its welcome.