I have the 4080 with an OC 9700k and I have zero need to upgrade since I’m primarily gaming on my computer and everything runs great at 3440x1440. What makes you want to upgrade besides the fun in upgrading and prices especially at microcenter are pretty good?

No, upgrade your gpu if you want meaningful improvements to your games. I sold my 3080 and bought a 4080 for $888 including sold 3080 profits. Massive improvement to performance and I have an outdated cpu (9700k) too. No complaints running at 3440x1440 resolution.