I don't use any LLM unless it supports either function calling or constrained output with grammars (so no GPTQ models, only GGUF).
I don't use headphones that aren't multipoint.
I don't use mice that don't have side buttons that I can program.
I don't use a keyboard if the right shift key is not full size.
I don't use speakers that have a hissing static noise.
Some physical items that don't come in black (if only because I enjoy asking Does it come in black? ...).