Everyone is a designer
Life does not present you with a choice to be or not to be a designer.
Everyone always has to make design decisions. There’s no escape: whatever you do, other people will interact with your product or service. Your design decisions can be good or bad, but they cannot not exist. You have to make them, or you are stuck.
To make these decisions, you have to be competent. That’s why design is a basic discipline, as language is. Saying you don’t want to learn design is like saying you don’t want to learn to write. It’s bullshit. Kids should start learning design in primary school: it’s for everyone.
You can’t just make crap and say “hey, I’m not a designer”. There’s no such thing as “not a designer”. If you make crap, you’re just a crappy designer. Fix it.