What would a non designed world look like? Absolute nothingness? You probably can't even concieve of what a non designed universe world be like, so how can you compare this world to it? You see a thing exists and by that fact alone think it must be designed. If pi was 4.863, it would be just as amazing. If space-time was extremely simple you would marvel at such sublime straightforwardness. When something seems unnecessary (appendix, heh) or cruel (endless death from non human causes) it can be explained away as humans lacking understanding but God having a plan.
And in reference to your other post, why would theism be required to see the beauty in the world? Plenty of atheists don't take life or its positives for granted precisely because they feel they will only exist for a limited time.
You've become a lot more like tanoomba as the board has turned on you. Perhaps this is a natural consequence of constant negative input.