All I know is that when I'm in unknown territory, I sleep far better in a tent than not. Like the Kakadus, Roger?
My lessoned learned happened back in '86, when I hired a guide to hike me deep into Malaysia's Taman Negara N.P., the most wild of jungle experiences I've had. One morning, after it had, and still was, raining hard (1.5" per hour), we were lying prone and looking out the screened A-frame tent door. We kept hoping the downpour would go away sometime soon so we could start our day. Then we saw it. A 10' python slid toward us out of nowwhere, and it stuck it's nose into the void where we didn't quite have the T-zip door closed. Jalil popped it in the nose and it sort of backed off, enough so we could zip the door closed. That dragon-without-legs could easily have come in while we were sleeping, and I have never been comfortable thinking about that possibility since.
But there's nothing better than sleeping just atop a ground sheet at 11,000' on CO's Continental Divide during a cloud-free Perseid shooter show in August, where/when there are no bugs or critters to mess things up.
Tents or no tents? It depends, doesn't it? Tarps are good, and tents are as well. So is sleeping under the stars, when you can afford it.
Disclaimer: I own 15 tents, and each has it's own purpose. I enjoy them as I do unique hotel rooms, playing with the different amenities--like attics, loops to hang a Photon, door arrangements, views, and interior space for waiting out a storm, etc. Some light, some moderate, a couple that could be called "Hemmingway" tents, which would work for a year based in Africa while one writes his book (Base Camp 6).
I say, whatever is light and serves the purpose is where it's at. Unless you're horse camping or have a couple porters to carry your stuff.
Just watch out for the frightened and territorial baboons that toss coconuts down at you, and of course, the pythons. And I guess also the 14-year olds with hunting rifles.