Yeah we can donate. Think about it. Just because many of us are overwhelmingly considered "sickly", and not the choicest of physical specimens, especially so upon our deaths, there are TONS of biological things they can take from us when we die to help other people. Skin, corneas, bones...TONS of things. There are massive amounts of biological items implanted in other people from cadavers. I look at it like, why let it rot in the ground/be burned to ashes when someone else can use it to either live longer or increase their quality of life. Religion is one thing, but people who go to the grave without being an organ donor are nothing short of morons.