DSLs are great if your problem and requirements are set in stone and never change forever. Unfortunately every project I've ever had in the real world has not been the case. Every time some DSL was used to specify the logic and behavior, it ended up being an albatross around the project neck that kept it from adapting to the new requirements. It would have always been better to just use a proper programming language in the first place.
I put the DSLs into two camps. The first one, the one that I'd say is okay to use, is like Google GCL or jsonnet. This is basically what's known as a "configuration language". It has a small amount of power to let you do a bit of text processing and abstraction, but not too much. If at any point you need more than those offer you, you don't want a DSL anymore. You just want a real programming language.
I put the DSLs into two camps. The first one, the one that I'd say is okay to use, is like Google GCL or jsonnet. This is basically what's known as a "configuration language". It has a small amount of power to let you do a bit of text processing and abstraction, but not too much. If at any point you need more than those offer you, you don't want a DSL anymore. You just want a real programming language.