This is an important point, and an oft-quoted mantra I've seen from older devs.

Your computer will change, and has little to know difference on your health.

Your monitor, keyboard, mouse (and chair/desk can also be included) are your long term tools that you use to interact with your computer. They can be a benefit or detriment to your health (eye strain, RSI, back pain). If you have to work with your computer for your job, and do so for many years, it's worth it to purchase tools that have long term benefits.