I take too much clothing. Enough for the absolute worst weather, bad luck trip I can imagine and consider myself blessed when I only use a pair of socks or two and maybe a shirt. All that unworn stuff would be sorely missed if the weather turned sour so it still goes. Plus I have room in that pack when solo. Having a smile on your face because you are physically comfortable after three days of cold and rain and wind is priceless.

Last trip I forgot my mattress pad which also means I forgot my chair. I was able to get a pad from an outfitter but my back really missed the chair aspect the first few nights. Even once I adapted, I missed it. It's a necessity for me. Adds weight but the space is seriously minimal and goes unnoticed.

Big luxuries for me is my camera gear, fishing gear, stove/fuel, and tarp. I'd go w/o them if I had to but considering the ease and/or pleasure they bring, why?

I do take a thermos I'd bet most people would poo-poo but I have room for it and enough hot water for two cups a joe and a pack of oatmeal is convenient for early starts. Helps warm the bag on cold nights too.

I did stop taking a ground cloth a few years ago. My old one probably has a years worth of use and looks to me to be in fine shape and will probably outlast that tent. A sun shower is nice for heating water but for actual bathing I find a couple pots of water work better so that stays home lately.

The five Ws define what's necessary or not in my book. WMMAV.