I don't even find it morbid or weird! It is quite valid to think about our remains. I couldn't really care what happens to mine. If it is useful to science, or if anyone needs my organs, go for it. My favourite option is cremation.
My friend has an interesting take on the subject. She insists on cremation and her ashes be scattered, so that there will be no "spot" for her family and (friend!) to sit and chat to her, thus disturbing her in the hereafter!!!