Hello @Timoe1. This is a common struggle for many folks, including myself. Personally a chair has become a standard part of my base kit. I have used sit pads, logs, rocks, and the ground for years, but feel the benefits of a chair is worth the weight. Some think the comfort is worth it, others don't. It really boils down to whether you feel the benefits outweigh the additional weight.
These are a couple of options I have used over the years.
I'm sure many in this community would love to share their personal preference. Happy Trails!