I guess I see it that you can't 'train' your baby to do anything, you can't train them to crawl, sit up, walk, talk, climb, use cutlery, you can only gently encourage them in the right direction when they start showing the signs that they are ready to do it themselves. Trying to 'train' them before they are ready on a physical, emotional and mental level, is pointless. Just because they may not *need* food overnight, doesn't mean they might not wake up thirsty.. or have a bad dream and need a reassuring cuddle from someone that loves them.
Somewhere along the way, we as adults have decided that our babies should sleep to our patterns, because they are what is *right*. when really, whats right for us, might not be whats right for our babies at all.
I think if its causing you stress and worry trying to change something that is currently working for you, then its not worth changing. It doesn't matter what everyone else does, or doesn't do, because they arn't in your home night after night. If its not working for you anymore, then thats different, but if its just a case of you feeling like you 'should' be doing x, y & z, even though it stresses you out, then forget about it, and enjoy your cuddle time. Lifes to short, and they grow to quickly,