1. Weight and clutter vs convenience. The striker is usually a thick heavy piece of cheap carbon steel. Some strikers come with wrench cutouts and measurement markings to try to convince you that they're worth carrying, but it's a truly worthless piece of gear. Any, and I mean ANY hard sharp edge or hard 90 degree corner can spark a ferro rod. That includes a broken piece of glass or a jagged rock. You don't need to carry a striker. Having the 90 degree spine on your knife is more convenient and can also be used to scrape other things, such as fatwood.
2. It's the easiest blade geometry to sharpen other than a chisel grind. You just lay the grind flat on the stone. If you have a pocket stone, you just lay the stone flat on the grind. Add a microbevel to finish, and your edge will be stronger. Only a *MICRO*bevel !!!! Don't turn it into a sabre grind. Also don't beat and abuse your knife and it shouldn't ever need an extreme amount of reprofiling. You sound like you've been watching too many youtube knife videos.
3. That's great. Don't use it then. And one day when you put your knife down or drop it and you can never find it again, you'll suddenly wish you had put a bright colored lanyard on it.
4. Yeah I don't like these much either. I'll give you that one.
5. That's not a feature. It's a lack of one. And I also agree.
hubba hubba!
