Someone here with 2 oleds a a real background?

Hi,

i do have 2x asus OLEDs and i start to get bored by hiding the taskbar and having a black background. I use my main monitor around 50%/50% gaming and office work and the second monitor is around 70% static stuff and 30% gaming. Thinking about just setting that cool background and forget for 3 years but i heard that not just burn in is an issue but also losing brightness.

What do you think?