Don't rule out switching to a larger size based on assumptions, but keep these TV buying tips in mind.
If it's been a while since you last bought a TV, you might be surprised to learn that what's considered "big" has changed a lot. These days even 42 and 50 inches are barely considered "midsize." This is thanks to manufacturers being able to make larger screens more cheaply, and also 4K and 8K resolutions making huge TVs more usable. Ultraslim designs also mean that larger screens take up less space.
So if you're considering a new TV, it's understandable if you're thinking of getting the same size, give or take a few inches. But the reality is, you can probably go a lot bigger. How big? Maybe you don't need a TV the size of a wall or a TV that is a wall, but in most homes a 65- or 75-inch TV will fit just fine.
Overall our advice is simple: Get as big a TV as you can afford. The longer answer depends on your room, your seating distance and the acceptance factor of any cohabiting co-deciders. Here's how to figure out how big you can go.