I read a thing from a physical therapist once that said sitting in a bad chair for 8 hours is like standing in shoes that are two sizes too small all day. You don't notice it right away because your body just adapts, but the damage adds up over months. The crazy part is your back doesn't hurt while you're sitting there, it hurts later when you stand up or the next morning. So people keep putting off buying a good chair because they feel fine in the moment. Then one day you sneeze and your lower back locks up and you can't bend over to tie your shoes. That $1,200 starts looking real cheap compared to back problems that stick around for years. My sister works from home and went through the same thing, tried a pillow and a kitchen chair for like six months before she finally broke down and got a real office chair.