I mean, you have the ability to learn to do stuff better to a certain extent, so it's not like your only choices are "suffer through the writing I'm capable of producing today for the rest of my life" or "give up on ever writing anything myself". Writing stuff yourself is pretty much a requirement of getting better at it, and arguably even if you do intend to use LLMs to supplement it, having a better baseline will be valuable for additional iteration with the LLM.