Aha! Should have asked that before you got yours so you don't get post-purchase regret on buying one that is too small!
I've gone bigger with every successive tv purchase over the years. My belief is that you can never have a big enough tv (got to persuade the wife why we need a bigger one each time though) and the price has to be realistic.
I went for a 65 inch OLED last year after having a 55 incher previously. Love it and would like a 75/77 next when/if the pricing gets reasonable!