Snip>I'm sure I could continue but basically what I'm getting at is that you're not going to get a definitive answer to this one.
The people who use tarps and hammocks do so because they like them.
The people who use other set-ups do so because they like them.<Snip
Like with so many other things here that is a pretty good summary.
For me it's all about not shutting yourself off from your surroundings - the nature, the fire etc. I've never liked enclosed tents - waking up to stale air and condensation. I can understand the likes of mountaineers wanting to shelter/ sleep in a tent in adverse weather - especially when being out at night is a neccesary evil to achieving the main goal (eg climbing the mountain). But if you want to camp out for it's own sake then why shut it all out in a tent? To me that's like creating a less comfortable bedroom away from your house. <Snip>
As for Mr Mears...I've learned a lot of good stuff from him but the first time I slept out in a hammock was on a jungle survival course in Belize over 20 years ago. Like others have said here - I take top tips wherever I find them - be it acknowledged experts like Ray Mears or a newbie poster on this forum.
That just about sums up my attitude as well.